Now, when both switches are off on one side, the motor **current** has nowhere to **flow**. That’s bad in a different **way**: the motor voltage will jump as high as it needs to create a path for the **current** to **flow**. That voltage jump will probably kill one of the switches and the **current** path is created through the damaged switch. The conventional direction of **current** **flow** **in** **a** **DC** **circuit** is from positive to negative. In reality the electron **flow** is from negative to positive. Most electronic schematics today still use the. 5-A) Does it matter in which direction you assume the **current** **flow** when applying Kirchhoff's laws to a **circuit**? Why or why not? Explain your answer. (Try to consider both AC and **DC** **in** your response. Who are the experts? Experts are tested by Chegg as specialists in their subject area. We review their content and use your feedback to keep the. A short **circuit** is simply a low resistance connection between the two conductors supplying electrical power to any **circuit**. This results in excessive **current flow** in the power source through the 'short,' and may even cause the power source to be destroyed. If a fuse is in the supply **circuit**, it will do its job and blow out, opening the **circuit**. Direct **current** (**DC**) is one-directional **flow** of electric charge.An electrochemical cell is a prime example of **DC** power. Direct **current** may **flow** through a conductor such as a wire, but can also **flow** through semiconductors, insulators, or even through a vacuum as in electron or ion beams.The electric **current flows** in a constant direction, distinguishing it from alternating. A diode is a one-way “valve” for electric current, analogous to a check valve for those familiar with plumbing and hydraulic systems. Ideally, a diode provides unimpeded flow for current in one direction (little or no resistance), but prevents flow in the other direction (infinite resistance). Its schematic symbol looks like this:. When a voltage source is connected to a **circuit**, the voltage will cause a uniform **flow** of charge carriers through that **circuit** called a **current**. In a single (one loop) **circuit**, the amount of **current** at any point is the same as the amount of **current** at any other point. If a **circuit** containing a voltage source is broken, the full voltage of that. In **DC**, the **current flow** is in one direction only. In AC, the **current flow** is constantly changing direction.An example of **DC** is the output of a. Electron **flow** is what we think of as electrical **current**. We are familiar with two types of electron **flow**, Direct **Current**, or **DC**, and Alternating **Current**, or AC. Direct **Current** is the kind of electrical **flow** we get from batteries and solar cells, when **electrons** travel in only one direction. On the other hand, AC is the kind of electrical **flow** we. The direction of an electric **current** is by convention the direction in which a positive charge would move. Thus, the **current** **in** the external **circuit** is directed away from the positive terminal and toward the negative terminal of the battery. Electrons would actually move through the wires in the opposite direction. This shows that in order to make the motor rotate clockwise, we must reverse the **flow** of **current** (i.e. changing the **flow** of **current** changes the direction of the force by 180 degrees). Of course, the direction of **current** is controlled by the polarity of the voltage. So in order to change the direction of rotation, we can simply reverse the.

## cd

In Direct **Current** (**DC**), the **flow** of electric charge is unidirectional. In **DC**, the voltage and **current** maintain a constant polarity and direction. ... equal to the sum of voltages of individual resistors because all the individual voltages are in-phase in pure resistive **circuit**.In the similar **way**,the total **current** in a pure resistive parallel AC. There are two types of **current**, Direct **Current** (**DC**) and Alternating **Current** (AC).DC **flows** only one **way** from **a** **DC** source such as a car battery while AC **flows** from one direction from a source, reverses, and **flows** the other direction. It happens multiple times a second, where the rate gets determined by frequency.

### oq

It goes back and forth continuously. **DC** is a **current** that **flows** in one direction. **Current flow in a DC circuit**: For example, a battery provides direct **current**. The **current** only **flows** one **way** out of a battery. The **current flow** in an AC **circuit**: In your wall sockets, you have AC. The **current** keeps changing direction about 50 to 60 times per. Electric **current** is defined as the **flow** of positive charge. In a **circuit current flows** from the positive anode to the negative cathode. What's confusing is that usually (but not always) electric **current** is actually carried by electrons in metals & electrons are negatively charged. So the **flow** of **current** is OPPOSITE to the actual **flow** of electrons. Example 1 Step 3. **Current** must **flow** through the 5Ω resistor and 4.615Ω resistor equivalent so they act like they are in series together. Use series rules to put these together. R T = R 1 + R 2. R T = 5Ω + 4.615Ω = 9.615Ω. This is the resistance placed at the battery equivalent to the resistance of the total **circuit**. 2. For **DC** **circuits**, when a capacitor is charged or discharged, **current** is flowing into and out of it. For AC **circuits**, **a** capacitor can act almost like a "resistor" but instead it is called reactance. ... Which **way** **does** **current** **flow** **in** **a** capacitor? When a capacitor is charging, **current** **flows** towards the positive plate (**as** positive charge is added. We do not need this kind of **DC** voltage. What we need is a steady and constant **DC** voltage, free of any voltage variation or ripple, as we get from the battery. To obtain such a voltage, we need to filter the half-wave signal. One **way** to do this is to connect a capacitor, known as a smoothing capacitor, across the load resistor as shown below. A Switch is a device which is designed to interrupt the **current flow** in a **circuit**. In simple words, a Switch can make or break an electrical **circuit**. ... computers, fans etc. In some applications, multi **way** switching is employed (like building wiring), where two or more switches are connected to control an electrical load from more than one.

### ax

Definition: The closed path in which the direct **current** **flows** is called the **DC** **circuit**. The **current** **flows** **in** only one direction and it is mostly used in low voltage applications. The resistor is the main component of the **DC** **circuit**. 30 watt Constant **Current** LED Driver **Circuit**. Assume the LEDs to be 3.3 V, 10 watt, and Supply input to be 12 V. **Current** of LED becomes = 10 / 3.3 = 3 amps. The LM338 **current** limiter can be calculated using the formula. R1 = 1.25 / 3 = 0.41 Ohms. Wattage = R x I 2 = 0.41 x 3 x 3 = 3.69 watts or 4 watts. The series resistor connected with the. In a series **circuit** (left-hand side) the **current flows** through one globe after another, each being able to make use of only a part of the energy carried by the **current**. In a series **circuit**, if one of the globes blows and **current** can no longer pass through it, the **current** cannot **flow** in the **circuit** at all. In a parallel **circuit** (right-hand side.

### ig

The direction of an electric **current** is by convention the direction in which a positive charge would move. Thus, the **current** **in** the external **circuit** is directed away from the positive terminal and toward the negative terminal of the battery. Electrons would actually move through the wires in the opposite direction. As the battery is charged, electrons **flow** in from the charger and Cu ++ ions **flow** in from solution. Since those ions still have electrons in them, there is electron **flow**. Likewise whatever negative ions **flow** toward the other electrode also carry electrons. There's no rule requiring that those two electron **flows** cancel. Mike W. (published on 07. Properties. **Direct current** is defined by the constant **flow** of electrons (see figure 1) from an area of high electron density to an area of low electron density. In **circuits** involving batteries, this is illustrated by the constant **flow** of charge from the negative terminal of the battery to the positive terminal of the battery. It is much more expensive and difficult to change the voltage of.

### ym

There are two common kinds of **circuits**, **DC**, or Direct **Current**, and AC, or Alternating **Current**. **In a DC circuit**, **current** always **flows** one direction. In an AC **circuit**, poles of the **circuit** are reversed in a regular repeating cycle. In one part of the cycle, one pole is at a higher potential (positive) and the other is at a lower (negative). This **circuit** works similarly to an SCR. When the trigger input is high, Both transistors Q2 (PNP transistors) and Q1 (PNP transistors) will work. Therefore, the **current flows** to the base pin of Q2, which has a voltage of 0.7 volts at resistor R1. When we cut the trigger voltage, the transistors can continue to work, because of the base **current**. RCCB test **circuit** [wp_ad_camp_2] Working principle of RCCB (**Residual Current Circuit Breaker** ): Under Normal condition, the Total **current flows** in the phase wire is equal to neutral wire. i.e consider now you have 10Amps is phase side means the same **current** 10 Amps **flow** in the neutral side also. The direction of an electric **current** is by convention the direction in which a positive charge would move. Thus, the **current** **in** the external **circuit** is directed away from the positive terminal and toward the negative terminal of the battery. Electrons would actually move through the wires in the opposite direction. It goes back and forth continuously. **DC** is a **current** that **flows** in one direction. **Current flow in a DC circuit**: For example, a battery provides direct **current**. The **current** only **flows** one **way** out of a battery. The **current flow** in an AC **circuit**: In your wall sockets, you have AC. The **current** keeps changing direction about 50 to 60 times per. The movement of the lithium ions creates free electrons in the anode which creates a charge at the positive **current** collector. The electrical **current** then **flows** from the **current** collector through a device being powered (cell phone, computer, etc.) to the negative **current** collector. The separator blocks the **flow** of electrons inside the battery.

### sh

1) To start off, in order for both **currents** to have the same effect on the human body, the magnitude of **DC flow** of constant strength needs to be two to four times great than AC; that is, more **DC current** is needed to induce the same amount of physical damage as AC **current**. This is because the effect of the **currents** on the body is a direct result. The simplest semiconductor component — the diode — performs a variety of useful functions related to its core purpose of managing the direction of the **flow** of electrical **current**. Diodes allow **current** to **flow** through them in one direction only. Perfectly efficient diodes appear to be open **circuits** with a negative voltage and they look like.

### yd

That is the **current flow** mostly exists between the lamp and the source. It's time to talk about your A.C problem. As in A.C the **current flows** back and. A **circuit** which enables a user to linearly control the speed of a connected motor by rotating an attached potentiometer is called a motor speed controller **circuit**. 3 easy to build speed controller **circuits** for **DC** motors are presented here, one using MOSFET IRF540, second using IC 555 and the third concept with IC 556 featuring torque processing. The reason behind this is, the **circuit** breaker works on a time v/s **current** curve, like you are using a 10 amps **circuit** breaker, so the **inrush current** which is more than 10 amps should **flow** through the **circuit** breaker more than the rated time of it. Follow the below mentioned steps to measure the **inrush current**:. This is a very complicated question in reality. in a simple **Dc circuit** (i.e. a battery driven **circuit**) there are 2 **way**'s that **current** is talked about. the reason is historic, so here goes a. Alternating **current** (AC) is an electric **current** **which** periodically reverses direction, in contrast to direct **current** (**DC**) **which** **flows** only in one direction. Most students of electrical engineering and related subjects begin their studies by learning about direct **current** (**DC**). This is because most of the digital electronics these students will. Diode operation. Figure 1. The p-n junction of a diode along with its corresponding schematic and real component. The cathode and the anode of the diode are labelled so that conventional **current** **flows** from anode to cathode through the diode. The **way** that a diode operates can be difficult to understand as it involves fairly advanced quantum.

### ze

In the series **circuit**, all the components are connected in such a **way** that if any fault happens in the **circuit**, the **current** will not **flow** through the **circuit**. The **current** in the series **circuit** is the same throughout the **circuit**. On the other hand, parallel **circuits** refer to a **circuit** with more than one path through which **current flows**. In the. A **battery** is a device that stores chemical energy and converts it to electrical energy. The chemical reactions in a **battery** involve the **flow** of electrons from one material (electrode) to another, through an external **circuit**. The **flow** of electrons provides an electric **current** that can be used to do work. To balance the **flow** of electrons, charged. The **flow** of electrical power has two different **ways** of moving, or **currents**. Direct **current** (**DC**) is a constant **flow** from negative to positive, while alternating **current** (AC) **flows** in a. Direct **current** or **DC** electricity is the continuous movement of electrons from negative to positive through a conducting material such as a metal wire. A **DC** **circuit** is necessary to allow the **current** or steam of electrons to **flow**. **In** **a** **circuit**, the direction of the **current** is opposite the **flow** of electrons. How **does current flow** in a **circuit** with a capacitor?. Jun 11, 2021 . The displacement **current flows** from one plate to the other, through the dielectric whenever **current flows** into or out of the capacitor plates and has the exact same magnitude as the **current** flowing through the capacitor's terminals. One might guess that this displacement. What is a Bridge Rectifier : **Circuit** Diagram & Its Working. The rectifier **circuit** is used to convert the AC (Alternating **Current**) into **DC** (Direct **Current**). Rectifiers are mainly classified into three types namely half-wave, full-wave, and bridge rectifier. The main function of all these rectifiers is the same as the conversion of **current** but. Though this induced emf is small, it causes a large **current** to **flow** in the body due to the low resistance of the core. This **current** is known as eddy **current**. The power loss due to this **current** is known as eddy **current** loss. ... The most convenient method to understand these **losses in a dc generator** or a **dc** motor is using the power **flow** diagram. If the two requirements of an electric **circuit** are met, then charge will **flow** through the external **circuit**. It is said that there is a **current** - a **flow** of charge. Using the word **current** in this context is to simply use it to say that something is happening in the wires - charge is moving. Yet **current** is a physical quantity that can be measured and expressed numerically. It is equal to one coulomb per second, or about 6 x 10 18 electrons per second. Electric **current** is defined as the the direction of **flow** of positive charge and therefore is always in the opposite direction to electron **flow**. The two most common types of electric **current** are direct **current** (**DC**) and alternating **current** (AC). For **DC circuits**, when a capacitor is charged or discharged, **current** is flowing into and out of it. For AC **circuits**, a capacitor can act almost like a "resistor" but instead it is called reactance. ... **Which way does current flow** in a capacitor? When a capacitor is charging, **current flows** towards the positive plate (as positive charge is added. Properties. **Direct current** is defined by the constant **flow** of electrons (see figure 1) from an area of high electron density to an area of low electron density. In **circuits** involving batteries, this is illustrated by the constant **flow** of charge from the negative terminal of the battery to the positive terminal of the battery. It is much more expensive and difficult to change the voltage of.

### hc

This single-direction **flow** of **current** is called a Direct **Current**, or **DC**. **In** the second volume of this book series, electric **circuits** are explored where the direction of **current** switches back and forth: Alternating **Current**, or AC. But for now, we'll just concern ourselves with **DC** **circuits**.

### ed

Series **DC Circuit** Example. Suppose three resistors R 1, R 2, and R 3 are connected in series across a voltage source of V (quantified as volts) as shown in the figure. Let **current** I (quantified as Ampere) **flow** through the series **circuit**. Now according to Ohm’s law, The voltage drop across resistor R 1, V 1 = IR 1. **In** an electrical and electronic **circuit**, the **current** **which** **flows** only in one direction (with positive lead) is called 'Direct **Current'**. AC **flows** **in** **a** bidirectional **way**. **DC** **flows** **in** **a** unidirectional **way**. It works on the AC source voltage 110V, 240V, 11kV, 33kV, etc. AC source produces real (P) power and reactive (Q) power. This is a very complicated question in reality. in a simple **Dc circuit** (i.e. a battery driven **circuit**) there are 2 **way**'s that **current** is talked about. the reason is historic, so here goes a.

## jd

When **current** is about to **flow** to the inductor, the magnetic field generated by that **current** cuts across the other windings, giving rise to an induced voltage and thus preventing any changes in the **current** level. The inductor **does** not allow AC to **flow** through it, but **does** allow **DC** to **flow** through it. How do you find the maximum **current** in a.

## xa

Figure 1: Electron **Flow** and Conventional **Current Flow** It is important to realize that the difference between conventional **current** ﬂow and electron ﬂow in no **way** effects any real-world behavior or computational results. In general, analyzing an electrical **circuit** yields results that are independent of the assumed direction of **current** ﬂow. Con-. This **circuit** works similarly to an SCR. When the trigger input is high, Both transistors Q2 (PNP transistors) and Q1 (PNP transistors) will work. Therefore, the **current** **flows** to the base pin of Q2, which has a voltage of 0.7 volts at resistor R1. When we cut the trigger voltage, the transistors can continue to work, because of the base **current**. With **a** **DC** **circuit**, **current** **flows** **in** only one direction. In an AC **circuit**, **current** changes direction. Polarity is normally identified on a **DC** **circuit** because it does not change. Polarity is not usually identified on an AC **circuit** because it is constantly changing. A photovoltaic cell produces electricity by converting light energy into a **DC** voltage. Properties. **Direct current** is defined by the constant **flow** of electrons (see figure 1) from an area of high electron density to an area of low electron density. In **circuits** involving batteries, this is illustrated by the constant **flow** of charge from the negative terminal of the battery to the positive terminal of the battery. It is much more expensive and difficult to change the voltage of. Change the Direction of Rotation of a **DC** Motor. The high voltage **DC** motors (**which** has 220V or above 220V) made up of temporary magnet i.e. field and armature have separate winding. So if we change the polarity of the supply the total **circuit** will change. Due to that, the motor will rotate in normal direction. Since a water **circuit** involves common visible phenomena, the analogy with a water **circuit** can give some quick perspective about the behavior of a simple **DC** electric **circuit**. There are many clear-cut parallels in behavior, particularly from an energy perspective. But water **flow** **in** **a** pipe and electric **current** **in** **a** wire are profoundly different. What is DC Current? When a DC voltage is present between two terminals and a wire or resistive element is connected to the terminals, DC current will flow. The most common resistive element is the resistor; we’ll learn more about this component in the next page. An incandescent light bulb is also a resistive element.

## se

### wt

Direct **current** or **DC** electricity is the continuous movement of electrons from negative to positive through a conducting material such as a metal wire. A **DC** **circuit** is necessary to allow the **current** or steam of electrons to **flow**. **In** **a** **circuit**, the direction of the **current** is opposite the **flow** of electrons.

### wu

How does a capacitor affect **DC** voltage? If the voltage source is **DC**, the lamp will not light because the **DC** **current** can't **flow** through the **circuit**; it's blocked by the dielectric. In effect, the **current** "sees" the capacitor as an open **circuit**. Thus, a capacitor lets more **current** **flow** **as** the frequency of the source voltage is increased. .

### ro

When the voltage reverses, so does the direction of the **current** **flow**. **In** the most common form of alternating **current**, used in most power distribution systems throughout the world, the voltage reverses itself either 50 or 60 times per second, depending on the country. ... but AC **circuits** lose much less power than **DC** **circuits**. About AC **current** -- the time average of the **current** in an AC **circuit** should be zero (unless there is some **DC** offset) -- **current flows** back and forth constantly, in response to alternating voltages. Many devices are perfectly happy to consume energy provided by AC **circuits** -- like light bulbs and toasters. Jump starting a car refers to recharging a dead (uncharged) car battery just enough to get the starter motor rotating. To jump start a car, you need a second car with a fully charged battery; you then connect the positive terminals of each battery to each other, and the negative terminals to each other (WARNING: read below). Electric **current** is normally referred to as the **flow** of charges through a conductor. It can be defined as the amount of charge that **flows** past a cross-section area in a conductor. In other words, the term “**current**” can be defined as the rate of **flow** of charges through a conductor. Electrons are the most common charge carriers. 3 Answers. When the battery is supplying power (discharging) to, e.g., the starter motor, the direction of the electric **current** is out of the positive terminal through the load and into the negative terminal. Within the wire and frame, the electric **current** is due to electron **current** **which** is **in** the opposite direction of the electric **current**. **Currents** **in** parallel **circuits**. **In** **a** parallel **circuit**, devices are connected so there is more than one closed path for **current** to follow. If the **current** **flow** is broken in one path, **current** will continue to **flow** **in** the other paths. Whenever a **current** encounters a junction in a **circuit** (parallel **circuit**), the charges have more than one path to **flow**.

### ww

A closed **circuit** allows **current** to **flow**, but an open **circuit** leaves electrons stranded. What **flows** through a closed **circuit**? When the metal pieces are connected, the **circuit** is closed. Electrons can **flow** through the **circuit**. When the metal pieces are separated, the **circuit** is open. Electrons cannot **flow** through the **circuit**. Water flowing through pipes is pretty good mechanical system that is a lot like an electrical **circuit**. This mechanical system consists of a pump pushing water through a closed pipe. Imagine that the electrical **current** is similar to the water flowing through the pipe. The following parts of the two systems are related: The pump is like the battery. Well, these lines where we see no resistors in **circuit** diagrams, that's assumed to be resistance-less, so all of the **current** will actually **flow** that **way**. So, by closing this switch, you're essentially removing R2 from the **circuit**. The **current** will just go through R1, and then follow the path of least resistance, literally.

### sq

The result is that the effective voltage causing a **current** to **flow** through the armature **circuit** is smaller than the applied voltage. That is: The overall efficiency of a **DC** motor can be found in a similar manner to that of a **DC** generator, ... Figure 6 **Circuit** for Example 4. **DC** Motor Efficiency Calculation Example 5. A 250 V **DC** long-shunt. **Circuit** Construction Kit: **DC** - PhET. Superposition Theorem **DC** **Circuits** Solved Example 1. Consider the given **circuit** and find the **current** through 2Ω resistor using superposition theorem. Step 1. At first, find the **current** through 2Ω resistor with 48V source acting alone. Hence replace the 24 V source by a short **circuit**. Here **current** I 2 **flows** through the load resistor. Definition: The closed path in which the direct current flows is called the DC circuit. The current flows in only one direction and it is mostly used in low voltage applications. The resistor is the main component of the DC circuit.

### ri

Full Wave Center Tapped Rectifier Working. As the input applied to the **circuit** it gets equally split at the center that is positive half and the negative half. For the positive half, the upper part of the diode will be in forward bias that is in conducting mode. Hence a path is established so that the **current flows** in the **circuit**. 1) To start off, in order for both **currents** to have the same effect on the human body, the magnitude of **DC flow** of constant strength needs to be two to four times great than AC; that is, more **DC current** is needed to induce the same amount of physical damage as AC **current**. This is because the effect of the **currents** on the body is a direct result.

### bb

.

### xv

This type of **electricity** is called direct **current** (**DC**) and most toys and small gadgets have **circuits** that work this **way**. Artwork: Top: In a direct **current** (**DC**) **circuit**, electrons always **flow** in the same direction. Bottom: In an alternating **current** (AC) **circuit**, the electrons reverse direction many times each second.

### mi

When a capacitor is connected in a **DC** **circuit** **as** **in** Fig 2.2.1, a large **current** will **flow**, but only for a short time. Electrons begin to **flow** from the negative battery terminal, and appear to be flowing around the **circuit**. ... Notice that during discharge, the **current** is flowing through the lamp in the opposite direction to the **flow** during the. **A** diode is a one-**way** "valve" for electric **current**, analogous to a check valve for those familiar with plumbing and hydraulic systems. Ideally, a diode provides unimpeded **flow** for **current** **in** one direction (little or no resistance), but prevents **flow** **in** the other direction (infinite resistance). Its schematic symbol looks like this:. Alternating **current** is an electric **current** **in** **which** the **flow** of electrons or charge carriers always reverses its direction many times a second at regular intervals (forward → and ← backward). The electrons flowing through a conducting wire is shown in the above figure. The electrons in the wire move in one direction for a short time and.

### ac

5-A) Does it matter in which direction you assume the **current** **flow** when applying Kirchhoff's laws to a **circuit**? Why or why not? Explain your answer. (Try to consider both AC and **DC** **in** your response. Who are the experts? Experts are tested by Chegg as specialists in their subject area. We review their content and use your feedback to keep the. When the voltage reverses, so does the direction of the **current** **flow**. **In** the most common form of alternating **current**, used in most power distribution systems throughout the world, the voltage reverses itself either 50 or 60 times per second, depending on the country. ... but AC **circuits** lose much less power than **DC** **circuits**.

### nr

Therefore it seems that the **current** **in** **a** **DC** **circuit** should **flow** from the negative terminal to the positive terminal. When I go online to sites run by battery manufacturers (Duracell, Eveready, etc.) the diagrams I see indicate this is true. However, I keep running into diagrams in science textbooks and resource books that show the **current**. For **DC** **circuits**, when a capacitor is charged or discharged, **current** is flowing into and out of it. For AC **circuits**, **a** capacitor can act almost like a "resistor" but instead it is called reactance. ... Which **way** **does** **current** **flow** **in** **a** capacitor? When a capacitor is charging, **current** **flows** towards the positive plate (**as** positive charge is added. 1/Rt = 1.25. Rt = 1/1.25 = .8 Ohms. Before we move on to the last rule here's how easy it is to calculate the amperage through each path using OHM'S LAW. In the example we see a 12 and 24 ohm resistor in parallel with a 12 volt source. First we figure out the total resistance of the **circuit**: 1/Rt = 1/12 + 1/24.

### qj

A **current** that always **flows** in one direction is called a direct **current** (**DC**). A battery for example, produces a direct **current**. A **current** that **flows** back and forth is called an alternating **current** (AC). Electric **Circuits**. Electrons cannot jump freely through the air to a positively charged atom. They need a **circuit** to move.

hq

## ku

**current**

**in**

**a**closed

**circuit**? The direction of an electric

**current**is by convention the direction in which a positive charge would move. Thus, the

**current**

**in**the external

**circuit**is directed away from the positive terminal and toward the negative terminal of the battery. Electrons would actually move through the wires in. Battery

**Circuit**Symbol. A battery has more than a cell and is used for the same purpose. The smaller terminal is negative and the larger one is positive. Abbreviated as 'B'.

**DC**Supply.

**DC**Supply

**Circuit**Symbol. Used as a

**DC**power supply, that is, the

**current**will always

**flow**

**in**one direction. AC Supply. The result is that the effective voltage causing a

**current**to

**flow**through the armature

**circuit**is smaller than the applied voltage. That is: The overall efficiency of a

**DC**motor can be found in a similar manner to that of a

**DC**generator, ... Figure 6

**Circuit**for Example 4.

**DC**Motor Efficiency Calculation Example 5. A 250 V

**DC**long-shunt.

iu