Most students of electricity begin their study with what is known as direct current dc, which is electricity. There are two types of circuits series circuits and parallel circuits. Physics 231 lecture 625 fall 2008 rc circuits up until now we have assumed that the emfs and resistances are constant in time so that all potentials, currents, and powers are constant in time however, whenever we have a capacitor that is being charged or discharged this is not the case now consider a circuit that consists of a source of emf, a. Then sketch the circuit neatly on a blank piece of paper using standard electrical symbols. Dc circuit basics 2 ground ground is the name given to the v0 reference point. Introduction the main purpose of this lab is to get reacquainted with material previously covered in courses such as phys 208, i. Direct current dc electrical circuits by ron kurtus. In this lab you will be using a battery to light two lightbulbs. No annoying ads, no download limits, enjoy it and dont forget to bookmark and share the love. Power, which is defined as the rate at which work is done or energy is used, is measured in watts 1 watt 1 jsec. Fundamentals of direct current circuits ced engineering. Why are you not supposed to use extension cords for devices. This makes it easier to refer to voltages, since you can generally assume that the 2nd point is ground if it is not explicitly stated.
Find materials for this course in the pages linked along the left. On pasco spark lxi interface, open sparkvue app, open pasco experiments, select physics 212l, select rc circuit. Describe in terms of circuit values the circuit condition needed for maximum power transfer. Chapter 27 questions 1, 3, 5 chapter 27 problems 7, 19, 49. Direct current dc circuit analysis deals with constant currents and voltages, while alternating current ac circuit analysis deals with timevarying voltage and current signals whose time average values are zero.
Physics 202, lecture 20 todays topics ac circuits with ac source resistors, capacitors and inductors in ac circuit rlc series in ac circuit impedance resonances in series rlc circuit ac circuit. Physics 126 laboratory manual 37 experiment 7 dc circuits and instruments look for knowledge not in books but in things themselves. Turn on the power supply and use recall button to select memory 1. Physics 6b lab jexperiment 5 electrical circuits apparatus computer and interface voltage sensor fluke 8010a multimeter pasco circuit board with two dcells box with hookup leads and components introduction this experiment is an introduction to the wiring of simple electrical circuits, the use of ammeters. Exactly like dc circuits, ohms law determines the voltage across the resistor. Capacitance, resistance, dc circuits 20, richard white. Chapter 28a direct current circuits a powerpoint presentation by paul e. Circuits containing inductors will behave differently from a simple resistance circuit. The sum of the currents flowing into any junction is equal to the sum of the currents flowing out.
Direct current dc circuits introduction in this lab, we will get acquainted with various components of electrical circuits. Now we start to consider various combinations of components and much of the interesting behavior depends upon. Lab 5 physics 212 lab rc circuits introduction the manner by which the which the voltage on a capacitor increases or decreases is studied. Dc voltage sources things whose output voltage is constant over time. The textbook is consistent in terms of topics or terminology, labeling, and format. 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. Van heuvelenetkina process physics 1e, chapter 16 162 electrical charge on the charged object redistributed itself until the electric potential or vfield on the surfaces of both conductors became equal. He imagined positive charges were the carriers of electric current, and defined electric current as flowing from a positive terminal to a negative one counterclockwise in the diagram.
Figure 6 dc current through an inductor es03 page 4 rev. Source files translated to texinfo format for easy online and printed. If you plug something in the wall it runs on ac although some devices internally convert the ac. This book covers direct current dc circuit theory and is broken up into three modules. Physics phys 2220 physics for scientists and engineers ii 4 intended for students majoring in the physical sciences and engineering. State the meaning of the term source resistance and describe its effect on a circuit. Circuits introduction thus far we have consider resistors in various combinations with a power supply or battery which provide a constant voltage source or direct current voltage dc.
Dc circuits open textbook library center for open education. Three capacitors, of capacitance 1f, 5f, and 6f, are arranged in a circuit with a switch and a 12v battery as shown above. Ap physics electric circuits, dc circuits are classified by the type of path that the electricity follows as it goes around the circuit. Define open and short circuits and describe their effects on a circuit. At the same time, it offers the opportunity to become familiar with important parts of the electronic instrumentation used in this course. Physics 6b lab jexperiment 5 electrical circuits apparatus computer and interface voltage sensor fluke 8010a multimeter pasco circuit board with two dcells box with hookup leads and components introduction this experiment is an introduction to the wiring of. Chapter ac alternating current circuits page 2 ac1 inductors and inductance in essential physics chapter 20, generating electricity, we discussed faradays law and lenzs law, and explored the tendency of a coil of wire to oppose changes in the magnetic flux passing through the coil. Tippens, professor of physics southern polytechnic state university. We will also use it to represent the implied completion of a circuit, even when we. These vis enable students to examine various scenarios in circuits or control panels and, hence, provide an excellent tool for. To begin to understand electronics, we must rst understand each electronic component and how these components function with one another. At the same time, it offers the opportunity to become familiar with important.
The circuit as shown in figure 1 is a representation of the rc circuit board provided. Module 2 covers more difficult problem solving techniques for circuits that include only dc sources and resistors. This phenomenon relates closely to the subject of this chapterelectric circuits. Directcurrent circuits department of physics and astronomy. When introduce complex numbers, the solution to circuits like the series rlc circuit become only slightly more complicated than solving ohms law. Digital electronics lecture electronics circuit simulator.
The voltage and the current are out of phase by 90 o. But for now, well just concern ourselves with dc circuits. The inclusion of free textbooks in fall of 2016 is the key element in the conversion of this laboratory course to a complete electronics course. As with capacitors, resistors are often in series and parallel configurations in circuits. Giancoli physics 6th edition circuits free pdf file sharing. As of today we have 77,691,594 ebooks for you to download for free.
Ohms law formula for an ac circuit may be stated as r v i eff eff 12. Many if not all electronics used today in one way or another stem from the principles covered in this lab. The halflife for the decay is measured directly and also calculated using the capacitive time constant. Equivalent to american high school diploma if this is too basic for you, you can try the more advanced version here. Core topics include electrostatics, magnetism, dc and ac circuits, maxwells equations, thermodynamics, and statistical physics. Write loop equations for the circuits below, based on the indicated direction of current, then find their current. All of the circuit labs youve been dealing with in this lab course have been using. Van heuvelenetkina process physics 1e, chapter 16 161 chapter 16. Because of this shape in contrast to the coil format. A common example of this type of circuit would be an incandescent light bulb where the resistive element is the filament of the bulb. Intermediate dc circuits introduction without a doubt electronics play an integral part of our lives. To prevent the battery from being rundown all the way, do not leave your circuit connected longer than necessary. Equivalent to advanced placement if this is too advanced for you, you can try the more basic version here. Resistors in ac circuits a circuit comprised of a current source and resistor will be first analyzed as seen in the schematic below.
This will take a little time but it is more than worth it. We know from elementary physics that all matter is made of funda. Dc implies that the current has a constant value and it flows in only one direction through a circuit. Pictured below are two circuits showing a single battery in a battery holder and one or two. As we saw with work, energy changed only when a portion of the force was in the direction of the displacement. Module 1 covers the basics for circuits that include dc sources voltage or. Physics dc circuits lab report physics homework help. In circuits with elements that store energy, it is common for current and voltage to exhibit exponential increase and decay figure 6. To be checked o as completing this experiment, your ta will glance at all your circuits, notes, and data, and look closely at the graphs of circuits 7 and 8.
Digital electronics lecture my electronic circuit simulator is the core or backbone of this electronics course. Though, no doubt, it is the inductor and capacitor. Dc circuits x why might all the electrical devices in your house suddenly turn off if you simultaneously turn too many on. These nonlinear reactive components are analyzed in the transient and steady state regions in circuits with dc sources in module 3. Resistance and ohms law measure your bodys resistance by holding the two test leads for your dmm in each hand. This site is for the storage and showcase of work done by mr. Dc circuits are simply those in which the current moves in one direction only thus direct current dc. William gilbert 15441603 objectives to learn the use of several types of electrical measuring instruments in dc circuits. To do this requires an interconnection of electrical devices. Circuits with timeaverage values of nonzero are also important and will be mentioned brie. Read online current electricity 22 study guide answers. You will not have covered dc circuits in the course lectures before attempting this lab. Jan 19, 2020 this topic covers dc circuits of o level physics.1349 402 692 900 1642 1323 411 179 100 1253 1146 1407 1613 1527 448 1527 71 457 998 881 1087 113 528 362 824 605 1589 876 1197 436 427 1275 1085 9 923 442 378 510 539 957 992 61 887 1238 877 1261 90