The purpose of the lab is to find the equivalent resistance for components in an electrical circuit in series and parallel. Experiment 4 ohms lawresistance in series and parallel object the object of this experiment is to verify the mathematical relationship of ohms law and to verify the laws relating resistors in series and resistors in parallel for direct current circuits. R1 and r2 are in parallel and r3 is in series with r1. Use the ammeter moving it to take readings in the different places seen in figure 2. We will look at the difference between these two setups in circuits, specifically looking at the effects of adding resistors in series or in parallel and observing the change in brightness of bulbs. Click on the multimeters to read the voltage or the current. Basically virtual lab for the two main types of circuit. Laboratory in wave motion, electricity, magnetism and optics phys 2240 uploaded by.
The first thing you need to do is calculate the equivalent resistance of the. Note down the readings on the ammeter and voltmeter. What current flows through a circuit of total resistance 2400. Now add a second resistor in the circuit, as shown in the diagram. Description this inquiry lab is to be completed after initial series and parallel circuits concepts are first taught. Lecture notes, introduction to human resources management samplepractice exam 2016, questions exam march 2016, questions and answers lecture notes, lectures 110 summary biology. Parallel dc circuits practice worksheet with answers. In this lab you will work with two circuits, one series and one in parallel.
If the following resistors were replaced with the values indicated. Circuit lab resistors in series and parallel circuitsusing. Emt 1150 lab professor aparicio carranza electrical circuits. To compare the characteristics of series circuits to the characteristics of parallel circuits. Resistors in series and parallel physics libretexts. Series and parallel circuits powerpoint presentation, free. Verify the characteristics of parallel circuits r t, v r1 v r2, etc b. This physics video tutorial explains how to solve any resistors in series and parallel combination circuit problems. Connect 3 bulbs in series and set the power supply to 2. Rheostat of 170ohms resistance, rheostat of 340ohms resistance, d. Lab, report 2 elee2790u electric circuits uoit studocu. Ohms law is the most fundamental relationship between the quantities of electric potential voltage, electric current, and resistance. Lab report series and parallel circuits february 19, 2016 shafkat salam lab partners.
Lab 3 parallel and series circuits phys 163 slu studocu. It is valid for many circuits and allows us to calculate one quantity if we know the value of the other two. In this experiment, the circuit characteristics of resistors. In this experiment, we could learn the difference between resistors in series and parallel. Ideally the students would attempt to solve the circuits. Series parallel circuits if we combined a series circuit with a parallel circuit we produce a series parallel circuit. The simplest combinations of resistors are the series and parallel connections illustrated in figure 1. Series and parallel ac circuits worksheet ac electric circuits. In a parallel circuit, voltage is equal across all components.
I want students to see that there are two different ways of approaching a problem such as this. View lab report circuit lab from physics 101 at bellaire high school. Connect the voltmeter in parallel around each of the other two bulbs. Physics 215 experiment 11 series and parallel circuits.
A lead is an electrical connection that comes from some device. Carefully measure those quantities, to verify the accuracy of your analysis. How life works ch 118 essay cowspiracy final paper referred by serena madden grade 85%. Series and parallel circuits lab report phys 2240 studocu. Set up each circuit and then measure the current and volage across each resistor. Series and parallel connections the objectives of this lab are.
A measure of this limit on charge flow is called resistance. What resistance in series parallel with the network in figure 2 will result in i t 10ma. In a series circuit, there is only one path for the current to flow therefore all parts of a series circuit have the same current. After completing this lab, you will be able to explain the difference between series and parallel circuits, and describe how the voltage and. Parallel circuits, ammeters, voltmeters a brief introduction to parallel circuits containing a battery, and two light bulbs. Combined series and parallel circuits phet contribution. Resistive elements are not connected in series or parallel. Series circuits resistors are connected in a single path. In a parallel circuit, resistances diminish to equal the total. Determine if everyday objects are conductors or insulators, and take measurements with an ammeter and voltmeter. Loose wires, worn out batteries, dead light bulbs and missw. Remember an ammeter goes into the circuit as shown in the diagram. We will use a multimeter to measure the voltage v, resistance r, and current i of said series circuit and use the collected data to determine how a series circuit functions. Circuit b was a series circuit with two 470 ohm resistors, the led was slightly dim.
Please help me to correct my lab report and write the conclusion abstract. If students have access to calculators that can do complexnumber arithmetic, the complex approach is actually simpler for seriesparallel combination circuits, and it yields richer more informative results. The technician will encounter circuits consisting of both series and parallel elements. Circuit lab resistors in series and parallel circuits.
The double lines between r1 and r2 is a symbol for parallel. Investigating series and parallel circuits bchydro power. Review the circuit diagram symbols on the first page of the investigating series and parallel circuits worksheet with the students. Also, measurements in very simple series and parallel circuits will be discussed. You will also need access to a power supply set at 6 volts, a multimeter, as well as 50, 100, and and 500 ohm resistors. Resistors in series and parallel example no2 find the equivalent resistance, r eq for the following resistor combination circuit. Parallel lab included, labeled and organized all parts of the lab report. Resistors in series and parallel resistor combinations. Typically, students practice by working through lots of sample problems and checking their answers against those provided by the textbook or the instructor. Again, at first glance this resistor ladder network may seem a complicated task, but as before it is just a combination of series and parallel resistors connected together. In a parallel circuit, all loads are connected in parallel to one another, forming junction points where the current can split and combine.
The simplest combinations of resistors are the series and parallel connections illustrated in. The objective of this lab is to study circuits with re sistors connected in series, parallel, and combination. Individual resistors had the same voltage across each and it equaled the voltage of the battery. The total resistance of a combination of resistors depends on both their individual values and how they are connected. Materials snap circuit kit stopwatch procedure part 1 1. The purpose of this lab is to verify ohms law then to apply ohms law to seriesparallel circuits and verify the current and voltage rules. Part 2 determine the current and voltage through current dividers and voltage dividers. Data section includes a diagram of the series and the parallel circuit. Resistors in series and parallel introductionabstract in this experiment, i used resistors in parallel and in series, and i also calculated the total resistance of an electric circuit. In a parallel circuit, each device has a connection to the power supply, independent of the other device. Parallel circuits provide several different paths for the electrical current. Media resources series parallel dc circuits analysis power calculations in a series parallel circuit effects of a rheostat in a series parallel circuit knowledge check 1. To check the results of connecting series and parallel resistors kcl its a fundamental law that manifestation of the conservation of matter charges, and it says that the sum of currents.
The data section includes a diagram of the two circuits being. Provide reasoning to explain the measurements in circuits. This lab uses the simulation and lab equipment both. On this quizworksheet, youll be faced with questions concerning things such as series and parallel circuits as well as their relationship. Enter your email address to follow this blog and receive notifications of new posts by email. Examine the circuit diagram to make this assessment. The calculated equivalent resistances for the series circuits will abide by. Lab 4 resistors in series and parallel introduction. Get free experiments, innovative lab ideas, product announcements, software updates, workshops schedule, and grant resources. Lab 3 circuits lab report series and parallel circuits.
Seriesparallel dc circuits worksheet dc electric circuits. Up until now, we have only been looking at simple circuits. The specified practical investigates the differences between the two types of circuits by observing the brightness of the. Calculate and measure the voltage, current and resistance characteristics of complex series parallel circuits. Use the wires to connect the battery, the ammeter and three bulbs in series. Learning to mathematically analyze circuits requires much study and practice. Click on the resistor or battery pack to generate new random voltages or resistances. Mar 22, 2010 purpose to investigate the current flow and voltages in series and parallel circuits, and also to use ohms law to calculate equivalent resistances of series and parallel circuits. Brian lavelle and winston tran abstract the purpose of this lab is to study the flow of current and potential difference across different points in a circuit composed of resistors in series, parallel or a combination of both. Make the resistors have different value and record the value of each resistor. Resistors are in series if the same current must pass sequentially through them. When an atom has the same number of positively charged protons in the.
You will apply a dc voltage to the circuit and measure the current through and voltage across each resistor. Capacitors in series and parallel in this experiment, you will compare the capacitance of circuits in series and parallel using snap circuits. Series and parallel a circuit has a resistor with a resistance of followed by three parallel branches, each holding a resistor with a resistance of. Unit 5 packet answers community unit school district 200. Calculate the resistance of each component calculate the equivalent resistance of the circuit power calculate the power of each component. Which is cheaper a series or a parallel circuit answers. Most circuits have more than one component, called a resistor that limits the flow of charge in the circuit. Series and parallel improved answer there are four categories of circuit. Similar to the thought experiment last week, imagine a trough, such as a rain gutter, various types of materials we can insert into the trough all fit snugly so no water can gush past the edges to change how water flows from the top to the bottom. Series circuits series and parallel circuits siyavula. Comparing your calculated resistance for the light bulb in the table with your previous answer using the emf of the power supply, does there seem to be a significant amount of resistance in our connecting wires and circuit board. Solving for the quantities and elements in a combination circuit is simply a matter of applying the laws and rules discussed up to this point.
In a parallel circuit, currents add to equal the total. Notice the voltmeter has leads in the com and v ports and is connected from one side of the resistors to the other side. To investigate the current flow and voltages in series and parallel circuits, and also to use ohms law to calculate equivalent resistances of. Physic lab 5 series and parallel circuits please h. Mathematically analyze the circuit, solving for all values of voltage, current, etc. Circuit c was a parallel circuit with two 470 ohm resistors, the led was the brightest out of the three circuits. Series and parallel circuits the easy way, and bundled to boot. For this experiment you will need an assortment of wires with alligator connectors and banana connectors. Switch off, before connecting the circuit of figure 6, measure the total. Fuses, resistors, and switches must be connected in series to the components they are. Oct 31, 2014 part 2 determine the current and voltage through current dividers and voltage dividers. Not required equipment list qty items part numbers 1 acdc electronics lab em8656 2 d cell 1. Combining series and parallel concepts into one circuit is the next step.
Resistors in series and parallel circuits using cck simulation erica chen learning goals. In the preceding discussions, series and parallel dc circuits have been considered separately. Use the appropriate list of major features for series or parallel connections to solve for the unknowns. Series and parallel circuits series circuits parallel circuits calculating equivalent resistances in series circuits calculating equivalent resistances in parallel circuits experiment time part 1 experiment time part 2 rules of thumb for series and parallel resistors series and parallel capacitors experiment time part 3. Seriesparallel circuits if we combined a series circuit with a parallel circuit we produce a seriesparallel circuit. To check kirchhoffs current law kcl from previous lab 2. Each of these circuits will use the same three resistors. There are two types of electrical circuit, parallel circuits and series circuits. Scribd is the worlds largest social reading and publishing site.
Two resistors in series a circuit having two resistors r1 and r2 in series is indicated below. You are going to build 2 series circuits, 2 parallel circuits and one combination circuit and measure the current through and voltage across each resistor. In a parallel circuit, power dissipations add to equal the total. Complex is a catchall, used to describe circuits that are not series. How to solve any resistors in series and parallel combination. The current divides, with some passing through each parallel branch. Investigation of the characteristics of series and parallel. The objective of this laboratory experiment is to analyze a series circuit in respect to its components and characteristics. Seriesparallel circuits lab free class notes online.
Click on the move meter button to switch your meters to another resistor. Technologyengineering progression grades 910 the use of electrical circuits and electricity is critical to most technological systems in society. Build circuits with batteries, resistors, light bulbs, fuses, and switches. We want our students to build circuits to understand ohms law, potential difference, current, and resistance, but most of the lab time is spent fighting with the equipment. The lab use the ohms law iru to find the equivalent resistance. To analyze this type of circuit, it should first be simplified reduced to an equivalent resistor, req. What was the voltage drops across each of the resistors. Components, eg bulbs, may be connected in series or parallel in a circuit. What do you notice about the relationship between the three voltage readings v 1, v 2, and v tot in parallel circuits. Parallel circuits resistors are connected in separate. For this lab you will be looking at voltage and current in a series circuit.
Use the formula for resistors in series and parallel to explain the observations. Parallel and series circuits austin glass lab partner lizzy ainsworth 922 abstract voltage, current, and resistance can be measured in an electrical circuit, and the behaviors of those measurements can vary based on how the circuit is set up in series or in parallel. Insert the wires of these leads into the circuit board across the three resistors in series with the two multimeters set to voltage v and current a as shown in the figures 6 and 7. I performed a series of experiments with different configurations of resistors, measuring the voltage and current across each resistor. We will now examine the concept of series and parallel circuits. Determine whether resistors are in series, parallel, or a combination of both series and parallel. View the circuit as a schematic diagram, or switch to a lifelike view. You will be building circuits similar to the ones you will be working with in homework and exam problems. Ohms law will be explored in this lab using series and parallel circuits. Circuits lab series and parallel going over how to use a multimeter for our series and parallel lab, as well as how to set up the circuit. The purpose of this lab is to verify ohms law then to apply ohms law to series parallel circuits and verify the current and voltage rules. Here is a lab for middle school on series and parallel circuits.
Series and parallel circuits components in an electrical circuit are in series. As the resistance of a circuit increases, the current will. Verify your calculations experimentally by measuring i t. Series circuits force the current through a single path. Series circuit construct the circuit figure 1 using the circuit construction kit cck simulation at the phet site. Check the accuracy of the circuit s construction, following each wire to each connection point, and verifying these elements onebyone on the diagram. Evaluate simple series and parallel circuits to predict changes to voltage, current, or resistance when simple changes are made to a circuit. Dec 12, 2017 this physics video tutorial explains how to solve any resistors in series and parallel combination circuit problems.
1280 1077 241 1340 1304 1482 1376 772 268 598 499 923 45 380 253 1352 1253 507 860 1040 317 1399 1167 321 1475 1423 1246 435 523 668 1439 1107 824 1452