The animation shows what happens when a bulb is removed from e. This is an original powerpoint animation that demonstrates the different between a series circuit and a parallel circuit. Two basic laws that describe the performance of electric circuits are ohms law and kirchhoffs circuit rules. Tippens, professor of physics southern polytechnic state university a powerpoint presentation by paul e. Circuit closed loop in which current can flow basic simple circuit voltage source voltage uses conducting connections wire. Chapter 28a direct current circuits a powerpoint presentation by paul e. Henceforth, the conductors that exhibit the property of resisting current flow are called resistors. Stray current control of direct current powered rail transit systems. Stray current control of direct currentpowered rail transit systems.
Chapter 25 current, resistance and electromotive force current resistivity resistance electromotive force and circuits energy and power in electric circuits theory of metallic conduction. 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. Ii alternating current ac with direct current covered and understood it is now time to delve into the world of alternating current. I direct current dc modern life could not exist if it were not for electricity and electronics. Chapter vii direct current circuits free download as powerpoint presentation. 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. Stray current control of direct currentpowered rail transit. This is a powerpoint that i used to teach my sixth graders about electric circuits, current and voltage. Direct current circuits fundamental electrical principles 2. Circuits powered by electrical outlets are ac circuits. Ppt direct current circuits powerpoint presentation free. 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.
Introduction simple circuits batteries resistors capacitors kirchhoffs rules conservation of energy conservation of charge steadystate circuits. Series circuits are those which are connected inline with the power source. All currents return to their sources following path of least impedance. The frequency of alternating current is 50hz or 60hz depending upon the country. We look at the basic elements used to build circuits, and find out what happens when elements are connected together into a circuit. View the circuit as a schematic diagram, or switch to a lifelike view. The emf describes the work done per unit charge and has units of volts. 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. Ppt directcurrent circuits powerpoint presentation. 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 11 slide powerpoint includes definitions, examples, videos and demonstrations. 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.
Electric current high current and low current electric circuit voltage high voltage and lo. This behavior of materials is often used to controllimit electric current flow in circuits. 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. Direct current circuits direct current dc and circuits. Protect signal carrying conductors from interference. Intro to electricity nyu tandon school of engineering. Find powerpoint presentations and slides using the power of, find free presentations research about alternating current ppt. Electron pump battery device that reduces potential. A free powerpoint ppt presentation displayed as a flash slide show on id. Electric current, circuit and voltage powerpoint by karen. Rc circuits according to kirchoffs 2nd rule we have using a counterclockwise loop 0 0. Electric current and direct current circuits powerpoint ppt presentation.
When the current in a circuit has a constant direction, the current is called direct current. Power point covering current voltage and resistance. A free powerpoint ppt presentation displayed as a flash slide show on. Circuit analysis electrical engineering science khan. Chapter vii direct current circuits electrical resistance. Tippens, professor of physics southern polytechnic state university. Introduction to circuits and ohms law video khan academy. By using a single set of coils, the structure is simplified. These circuit lines run along the sides of the slide, strategically framing the content like a border.
Sum of the individual voltages source voltage current is the same in all parts of a series circuit. It reverses its direction while flowing in a circuit. Most of the circuits analyzed will be assumed to be in steady state, with constant magnitude and direction. Physics for scientists and engineers 8ed ch28 powerpoint. Calculating resistance, voltage, and current using ohms law. Alper guneren 2010512022 ugur karaali 2010512026 1 2. Ppt direct current circuits powerpoint presentation, free.
Circuit analysis is the process of finding all the currents and voltages in a network of connected components. The trb transit cooperative research programs tcrp research report 212. A direct current circuit is an electrical circuit that consists of any combination of constant. 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, circuit and voltage powerpoint by karen wilson. The electrical circuit diagram powerpoint template shows a simple illustration of electric circuit symbol elements. Basic laws of circuits kirchhoffs current law the algebraic sum of the currents entering a node equal to zero.
For simple simple and complex complex circuits, determine the voltage and and current current for each resistor. This is called direct current dc battery powered circuits. It shows both the standard circuit symbols, as well as pictures, complete with batteries, light bulbs, and wires. Circuit symbols three types of circuits series parallel compound series circuits series circuits have 1 path for charges to flow. A parallel circuit is one that is connected in such a way that the same voltage. This module describes the basic concepts of direct current dc electrical circuits and discusses the associated terminology. Electrical symbols vary from different countries and design platforms but they are more standardized today. Direct current machines electric generators and motors direct current generator voltage values. Download alternating current versus direct ppt for free. Sources of emf a source of emf electromotive force maintains a constant current in a closed circuit. Determine if everyday objects are conductors or insulators, and take measurements with an ammeter and voltmeter. Ppt direct current circuits powerpoint presentation. Direct current dc where electrons flow in the same direction. Electrical troubleshooting direct current machines powerpoint.
It features a solid dark blue background with circuit lines in light blue color, which gives it a glowing, futuristic effect. The terminal voltage is the accessible external voltage. Electrical circuit diagram powerpoint template slidemodel. The battery emf is the voltage produced internally. The current in series circuits is constant throughout but the voltage may vary. The source that maintains the current in a closed circuit is called a source of emf. Generators batteries neglect internal resistance r. Chapter23 alternating current circuits ac circuits resistance capacitance capacitive reactance.
Provide return path to the source over the lowest impedance most desirable path possible. The circuit powerpoint template is a clean, sophisticated and ultramodern template that you can use for presentations about technology and circuitry. An electromotive force device, or emf device, is a source of constant potential. User conducting connections wires direct current circuits. 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. Ppt direct current circuits powerpoint presentation free to download id. Build circuits with batteries, resistors, light bulbs, fuses, and switches. This is called direct current dc batterypowered circuits are dc circuits. This document refers to the training module 6 only. Chapter 28 direct current circuits direct current when the current in a. Ppt electric current and directcurrent circuits powerpoint. Chapter 25 current, resistance and electromotive force.
These symbols are used to create an electrical schematic diagram. Parallel circuits are those which branch off from the power supply. Adding resistance in series decreases total current dimmer light bulbs parallel circuits. In this chapter we will explore circuits with batteries, resistors, and capacitors in this course, we will only consider. E 0 within a conductor current i 0, but not all charges are at rest, free electrons can move v 10 6. Series circuits voltage may be different across different objects in a series circuit. Ch28 direct current circuits to print or download this file, click the link below. The total current supplied from the power source is divided among each of the branches but voltage is common throughout. In these circuits, energy is conveyed from one place to another.
Ohms law with voltage steady, changes in current and resistance 2. 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. Rms values since voltage and current are always changing we need some way of averaging out their effect. View and download powerpoint presentations on alternating current ppt. Sources of emf the source that maintains the current in a closed circuit is called a source of emf. 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. The complete electrical troubleshooting program consists of 9 modules individual powerpoint presentations. Getting started with basic electronics is easier than you might think. The potential difference across the resistor would be the same.
This is called direct current dc battery powered circuits are dc circuits. Direct current dc is the unidirectional flow of an electric charge. Ppt series and parallel circuits powerpoint presentation free to. Chapter ac alternating current circuits page 4 answer to essential question ac. The magnitude of resistance is dictated by electric properties of the material and material geometry. Any devices that increase the potential energy of charges. Chapter 28 direct current circuits hcc learning web. 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. Alevel physics dc direct current circuits 5 powerpoints. View notes physics for scientists and engineers 8ed ch28 powerpoint slides from phys 2326 at houston community college. To print or download this file, click the link below.
History of alternating current william stanley, jr. 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. 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. Sep 02, 2008 direct current circuits fundamental electrical principles 2.
Electrical troubleshooting direct current machines. Ppt directcurrent circuits powerpoint presentation, free. Current and potential difference in circuits draw circuit diagrams with power sources cell, battery or a. Acdc current ratio in a current superimposition variable flux. Electric current and directcurrent circuits powerpoint ppt presentation. 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. A guidebook allows transit agencies, design, and maintenance practitioners to influence new system construction, extensions, and maintenance and operation of existing systems. Power in electric circuits 43 s thorsepower this symbol. 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.