Intro to electricity nyu tandon school of engineering. This behavior of materials is often used to controllimit electric current flow in circuits. Ppt electric current and directcurrent circuits powerpoint. Acdc current ratio in a current superimposition variable flux. Direct current circuits fundamental electrical principles 2. Electrical circuit diagram powerpoint template slidemodel. Calculating resistance, voltage, and current using ohms law. Current and potential difference in circuits draw circuit diagrams with power sources cell, battery or a. Power in electric circuits 43 s thorsepower this symbol. This is an original powerpoint animation that demonstrates the different between a series circuit and a parallel circuit.
For devices in your home that operate on direct current, like a flat screen tv, an ac to dc adapter is used to convert the alternating current from a wall outlet to direct current for the device. Electric current, circuit and voltage powerpoint by karen. It features a solid dark blue background with circuit lines in light blue color, which gives it a glowing, futuristic effect. Tippens, professor of physics southern polytechnic state university a powerpoint presentation by paul e. Direct current dc is the unidirectional flow of an electric charge. Direct current dc where electrons flow in the same direction. Chapter 28 direct current circuits hcc learning web.
Tippens, professor of physics southern polytechnic state university. History of alternating current william stanley, jr. Two basic laws that describe the performance of electric circuits are ohms law and kirchhoffs circuit rules. I direct current dc modern life could not exist if it were not for electricity and electronics. The animation shows what happens when a bulb is removed from e. Stray current control of direct currentpowered rail. This document refers to the training module 6 only.
Alper guneren 2010512022 ugur karaali 2010512026 1 2. Ohms law with voltage steady, changes in current and resistance 2. All currents return to their sources following path of least impedance. In these circuits, energy is conveyed from one place to another. Ppt directcurrent circuits powerpoint presentation. Adding resistance in series decreases total current dimmer light bulbs parallel circuits. Alternating current is when current flows in one direction for a set time, then changes direction, then changes back, and so on in a repeating cycle. View notes physics for scientists and engineers 8ed ch28 powerpoint slides from phys 2326 at houston community college. This is called direct current dc battery powered circuits are dc circuits. Power point covering current voltage and resistance. The magnitude of resistance is dictated by electric properties of the material and material geometry.
Series circuits voltage may be different across different objects in a series circuit. Determine if everyday objects are conductors or insulators, and take measurements with an ammeter and voltmeter. Circuit analysis is the process of finding all the currents and voltages in a network of connected components. The frequency of alternating current is 50hz or 60hz depending upon the country. A free powerpoint ppt presentation displayed as a flash slide show on id. Rms values since voltage and current are always changing we need some way of averaging out their effect. Sources of emf the source that maintains the current in a closed circuit is called a source of emf. It reverses its direction while flowing in a circuit. Direct current when the current in a circuit has a constant direction, the current is called direct current most of the circuits analyzed will be assumed to be in. These symbols are used to create an electrical schematic diagram. Chapter vii direct current circuits electrical resistance. Physics 231 lecture 62 fall 2008 resistors in series and parallel as with capacitors, resistors are often in series and parallel configurations in circuits series parallel the question then is what is the equivalent resistance.
This module describes the basic concepts of direct current dc electrical circuits and discusses the associated terminology. Resistors in series since these resistors are in series, we have the same current in all three resistors we also have that the sum of the potential differences across the three. Electrical troubleshooting direct current machines. Direct current circuits direct current dc and circuits. Chapter 25 current, resistance and electromotive force current resistivity resistance electromotive force and circuits energy and power in electric circuits theory of metallic conduction. A direct current circuit is an electrical circuit that consists of any combination of constant. The complete electrical troubleshooting program consists of 9 modules individual powerpoint presentations. Series circuits are those which are connected inline with the power source. Circuits powered by electrical outlets are ac circuits. For simple simple and complex complex circuits, determine the voltage and and current current for each resistor. We look at the basic elements used to build circuits, and find out what happens when elements are connected together into a circuit. Ppt series and parallel circuits powerpoint presentation free to. Most of the circuits analyzed will be assumed to be in steady state, with constant magnitude and direction. User conducting connections wires direct current circuits.
Sum of the individual voltages source voltage current is the same in all parts of a series circuit. Electric current, circuit and voltage powerpoint by karen wilson. Iowa state analog integrated circuit design course lectures in powerpoint format, spring 2006 an introduction to analog circuit design part 1, planet analog short introduction to cmos design from the national institute of applied sciences insa, toulouse, france. The trb transit cooperative research programs tcrp research report 212. Ppt direct current circuits powerpoint presentation.
When the current in a circuit has a constant direction, the current is called direct current. Chapter 25 current, resistance and electromotive force. Any devices that increase the potential energy of charges. Chapter ac alternating current circuits page 4 answer to essential question ac. The terminal voltage is the accessible external voltage. An electromotive force device, or emf device, is a source of constant potential. These circuit lines run along the sides of the slide, strategically framing the content like a border. To print or download this file, click the link below. A free powerpoint ppt presentation displayed as a flash slide show on. View and download powerpoint presentations on alternating current ppt.
Electric current high current and low current electric circuit voltage high voltage and lo. A parallel circuit is one that is connected in such a way that the same voltage. Solving for the current as time increases, the charge on the capacitor increases, therefore the current in the circuit decreases current will flow until the capacitor has a charge on. This is called direct current dc battery powered circuits. Basic laws of circuits kirchhoffs current law the algebraic sum of the currents entering a node equal to zero. Resistors in series and parallel as with capacitors, resistors are often in series and parallel configurations in circuits series parallel the question then is what is the equivalent resistance. Ch28 direct current circuits to print or download this file, click the link below. It shows both the standard circuit symbols, as well as pictures, complete with batteries, light bulbs, and wires. Sources of emf a source of emf electromotive force maintains a constant current in a closed circuit. The history of electricity starts more than two thousand years ago, with the greek philosopher thales being the earliest known researcher into electricity. Electric current and direct current circuits powerpoint ppt presentation. Introduction simple circuits batteries resistors capacitors kirchhoffs rules conservation of energy conservation of charge steadystate circuits. Instructor what we will introduce ourselves to in this video is the notion of electric circuits and ohms law, which you can view as the most fundamental law or the most basic law or simplest law when we are dealing with.
Find powerpoint presentations and slides using the power of, find free presentations research about alternating current ppt. The current in series circuits is constant throughout but the voltage may vary. Ppt direct current circuits powerpoint presentation free to download id. Sep 02, 2008 direct current circuits fundamental electrical principles 2. Electrical symbols vary from different countries and design platforms but they are more standardized today. Provide return path to the source over the lowest impedance most desirable path possible. The emf describes the work done per unit charge and has units of volts. Rc circuits according to kirchoffs 2nd rule we have using a counterclockwise loop 0 0. Getting started with basic electronics is easier than you might think. This is a powerpoint that i used to teach my sixth graders about electric circuits, current and voltage. This instructable will hopefully demystify the basics of electronics so that anyone with an interest in building circuits can hit the ground running. Stray current control of direct currentpowered rail transit. This is called direct current dc batterypowered circuits are dc circuits. Ppt direct current circuits powerpoint presentation free.
Introduction to circuits and ohms law video khan academy. The connection between the supply and the load is made by soldering with wires that are often called leads, or with many kinds of connectors and terminals. This 11 slide powerpoint includes definitions, examples, videos and demonstrations. Parallel circuits are those which branch off from the power supply. Build circuits with batteries, resistors, light bulbs, fuses, and switches.
Download alternating current versus direct ppt for free. Stray current control of direct currentpowered rail transit systems. Mar 27, 2017 for devices in your home that operate on direct current, like a flat screen tv, an ac to dc adapter is used to convert the alternating current from a wall outlet to direct current for the device. The circuit powerpoint template is a clean, sophisticated and ultramodern template that you can use for presentations about technology and circuitry. Generators batteries neglect internal resistance r. The total current supplied from the power source is divided among each of the branches but voltage is common throughout. Circuit closed loop in which current can flow basic simple circuit voltage source voltage uses conducting connections wire. Chapter 28 direct current circuits direct current when the current in a. Direct current machines electric generators and motors direct current generator voltage values. Volume 2 of 4 module 3 dc circuits this module introduces the rules associated with the reactive components of inductance and capacitance and how they affect dc circuits. The electrical circuit diagram powerpoint template shows a simple illustration of electric circuit symbol elements.
Circuit analysis electrical engineering science khan. E 0 within a conductor current i 0, but not all charges are at rest, free electrons can move v 10 6. Ii alternating current ac with direct current covered and understood it is now time to delve into the world of alternating current. Ppt direct current circuits powerpoint presentation, free. Henceforth, the conductors that exhibit the property of resisting current flow are called resistors. Chapter23 alternating current circuits ac circuits resistance capacitance capacitive reactance. The potential difference across the resistor would be the same. Circuit symbols three types of circuits series parallel compound series circuits series circuits have 1 path for charges to flow. Stray current control of direct current powered rail transit systems. By using a single set of coils, the structure is simplified.
Ppt directcurrent circuits powerpoint presentation, free. Chapter vii direct current circuits free download as powerpoint presentation. Chapter 28a direct current circuits a powerpoint presentation by paul e. Protect signal carrying conductors from interference. Physics for scientists and engineers 8ed ch28 powerpoint. The battery emf is the voltage produced internally. A guidebook allows transit agencies, design, and maintenance practitioners to influence new system construction, extensions, and maintenance and operation of existing systems. The source that maintains the current in a closed circuit is called a source of emf. Electron pump battery device that reduces potential. Jul 25, 2016 this is a bundle of the five lessons, complete with full lesson plans, curriculum links, powerpoints and practical ideas for the chapter on dc circuits read more. View the circuit as a schematic diagram, or switch to a lifelike view. With the current increasing instead of decreasing, however, the potential difference across the inductor would have the same magnitude as before, but the left end of the inductor would.
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