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. Mathematically analyze the circuit, solving for all values of voltage, current, etc. Series and parallel circuits the easy way, and bundled to boot. Enter your email address to follow this blog and receive notifications of new posts by email. Evaluate simple series and parallel circuits to predict changes to voltage, current, or resistance when simple changes are made to a circuit.
Investigating series and parallel circuits bchydro power. Determine if everyday objects are conductors or insulators, and take measurements with an ammeter and voltmeter. How to solve any resistors in series and parallel combination. Each of these circuits will use the same three resistors. The purpose of the lab is to find the equivalent resistance for components in an electrical circuit in series and 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. Series and parallel circuits powerpoint presentation, free. 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.
Individual resistors had the same voltage across each and it equaled the voltage of the battery. What resistance in series parallel with the network in figure 2 will result in i t 10ma. Fuses, resistors, and switches must be connected in series to the components they are. Lab report series and parallel circuits february 19, 2016 shafkat salam lab partners. The lab use the ohms law iru to find the equivalent resistance. R1 and r2 are in parallel and r3 is in series with r1. 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. Basically virtual lab for the two main types of circuit. The current divides, with some passing through each parallel branch. When an atom has the same number of positively charged protons in the. In a parallel circuit, power dissipations add to equal the total. 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.
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%. Make the resistors have different value and record the value of each resistor. The first thing you need to do is calculate the equivalent resistance of the. Lab 3 circuits lab report series and parallel circuits. Verify your calculations experimentally by measuring i t. Series parallel circuits if we combined a series circuit with a parallel circuit we produce a series parallel circuit. Click on the resistor or battery pack to generate new random voltages or resistances. 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. Laboratory in wave motion, electricity, magnetism and optics phys 2240 uploaded by. Use the appropriate list of major features for series or parallel connections to solve for the unknowns. The total resistance of a combination of resistors depends on both their individual values and how they are connected.
Rheostat of 170ohms resistance, rheostat of 340ohms resistance, d. In this experiment, the circuit characteristics of resistors. Parallel circuits resistors are connected in separate. View the circuit as a schematic diagram, or switch to a lifelike view. Series circuits series and parallel circuits siyavula. Build circuits with batteries, resistors, light bulbs, fuses, and switches. Resistors are in series if the same current must pass sequentially through them. The calculated equivalent resistances for the series circuits will abide by. Click on the multimeters to read the voltage or the current. 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. 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.
In a parallel circuit, each device has a connection to the power supply, independent of the other device. Circuit lab resistors in series and parallel circuitsusing. Verify the characteristics of parallel circuits r t, v r1 v r2, etc b. In this lab you will work with two circuits, one series and one in parallel. 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.
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. Note down the readings on the ammeter and voltmeter. The simplest combinations of resistors are the series and parallel connections illustrated in figure 1. This physics video tutorial explains how to solve any resistors in series and parallel combination circuit problems. Parallel dc circuits practice worksheet with answers. I performed a series of experiments with different configurations of resistors, measuring the voltage and current across each resistor. Series and parallel connections the objectives of this lab are. Calculate the resistance of each component calculate the equivalent resistance of the circuit power calculate the power of each component. Click on the move meter button to switch your meters to another resistor. For this lab you will be looking at voltage and current in a series circuit.
What current flows through a circuit of total resistance 2400. Emt 1150 lab professor aparicio carranza electrical circuits. Parallel lab included, labeled and organized all parts of the lab report. A lead is an electrical connection that comes from some device. Resistive elements are not connected in series or parallel. Circuit b was a series circuit with two 470 ohm resistors, the led was slightly dim. Combined series and parallel circuits phet contribution. Use the wires to connect the battery, the ammeter and three bulbs in series. The data section includes a diagram of the two circuits being. Not required equipment list qty items part numbers 1 acdc electronics lab em8656 2 d cell 1. Physic lab 5 series and parallel circuits please h.
It is valid for many circuits and allows us to calculate one quantity if we know the value of the other two. View lab report circuit lab from physics 101 at bellaire high school. In a parallel circuit, voltage is equal across all components. Series and parallel ac circuits worksheet ac electric circuits. What do you notice about the relationship between the three voltage readings v 1, v 2, and v tot in parallel circuits. Complex is a catchall, used to describe circuits that are not series. Lecture notes, introduction to human resources management samplepractice exam 2016, questions exam march 2016, questions and answers lecture notes, lectures 110 summary biology. We will now examine the concept of series and parallel circuits. Seriesparallel dc circuits worksheet dc electric circuits.
Connect the voltmeter in parallel around each of the other two bulbs. 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. In a parallel circuit, resistances diminish to equal the total. 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. Lab, report 2 elee2790u electric circuits uoit studocu. To investigate the current flow and voltages in series and parallel circuits, and also to use ohms law to calculate equivalent resistances of. Determine whether resistors are in series, parallel, or a combination of both series and parallel. As the resistance of a circuit increases, the current will. Circuit c was a parallel circuit with two 470 ohm resistors, the led was the brightest out of the three circuits. Here is a lab for middle school on series and parallel circuits. The specified practical investigates the differences between the two types of circuits by observing the brightness of the.
Ideally the students would attempt to solve the circuits. Series circuits force the current through a single path. Use the formula for resistors in series and parallel to explain the observations. 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. To check kirchhoffs current law kcl from previous lab 2. Lab 4 resistors in series and parallel introduction. Resistors in series and parallel example no2 find the equivalent resistance, r eq for the following resistor combination circuit. You will be building circuits similar to the ones you will be working with in homework and exam problems. Ohms law is the most fundamental relationship between the quantities of electric potential voltage, electric current, and resistance. Two resistors in series a circuit having two resistors r1 and r2 in series is indicated below. Series and parallel circuits components in an electrical circuit are in series. 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.
Physics 215 experiment 11 series and parallel 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. In a parallel circuit, currents add to equal the total. The objective of this laboratory experiment is to analyze a series circuit in respect to its components and characteristics. Also, measurements in very simple series and parallel circuits will be discussed. To analyze this type of circuit, it should first be simplified reduced to an equivalent resistor, req. Data section includes a diagram of the series and the parallel circuit. Check the accuracy of the circuit s construction, following each wire to each connection point, and verifying these elements onebyone on the diagram. There are two types of electrical circuit, parallel circuits and series circuits. Lab 3 parallel and series circuits phys 163 slu studocu.
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. 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. You will apply a dc voltage to the circuit and measure the current through and voltage across each resistor. Components, eg bulbs, may be connected in series or parallel in a circuit. Switch off, before connecting the circuit of figure 6, measure the total. Ohms law will be explored in this lab using series and parallel circuits.
Resistors in series and parallel physics libretexts. Unit 5 packet answers community unit school district 200. Which is cheaper a series or a parallel circuit answers. Series circuit construct the circuit figure 1 using the circuit construction kit cck simulation at the phet site. Circuit lab resistors in series and parallel circuits. 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. Resistors in series and parallel resistor combinations. 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.
Description this inquiry lab is to be completed after initial series and parallel circuits concepts are first taught. This lab uses the simulation and lab equipment both. Resistors in series and parallel circuits using cck simulation erica chen learning goals. Remember an ammeter goes into the circuit as shown in the diagram. Parallel circuits, ammeters, voltmeters a brief introduction to parallel circuits containing a battery, and two light bulbs. Technologyengineering progression grades 910 the use of electrical circuits and electricity is critical to most technological systems in society. 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. Provide reasoning to explain the measurements in circuits. 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. Seriesparallel circuits if we combined a series circuit with a parallel circuit we produce a seriesparallel circuit. Examine the circuit diagram to make this assessment. Learning to mathematically analyze circuits requires much study and practice. The simplest combinations of resistors are the series and parallel connections illustrated in.
Loose wires, worn out batteries, dead light bulbs and missw. Calculate and measure the voltage, current and resistance characteristics of complex series parallel circuits. 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. The double lines between r1 and r2 is a symbol for parallel.
In this experiment, we could learn the difference between resistors in series and parallel. On this quizworksheet, youll be faced with questions concerning things such as series and parallel circuits as well as their relationship. Oct 31, 2014 part 2 determine the current and voltage through current dividers and voltage dividers. Please help me to correct my lab report and write the conclusion abstract. In a parallel circuit, all loads are connected in parallel to one another, forming junction points where the current can split and combine. In the preceding discussions, series and parallel dc circuits have been considered separately.
Scribd is the worlds largest social reading and publishing site. For this experiment you will need an assortment of wires with alligator connectors and banana connectors. Up until now, we have only been looking at simple circuits. A measure of this limit on charge flow is called resistance. Typically, students practice by working through lots of sample problems and checking their answers against those provided by the textbook or the instructor. 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. I want students to see that there are two different ways of approaching a problem such as this. Get free experiments, innovative lab ideas, product announcements, software updates, workshops schedule, and grant resources. Series circuits resistors are connected in a single path. Review the circuit diagram symbols on the first page of the investigating series and parallel circuits worksheet with the students. Capacitors in series and parallel in this experiment, you will compare the capacitance of circuits in series and parallel using snap circuits. Notice the voltmeter has leads in the com and v ports and is connected from one side of the resistors to the other side. Use the ammeter moving it to take readings in the different places seen in figure 2. Parallel circuits provide several different paths for the electrical current.
Now add a second resistor in the circuit, as shown in the diagram. Combining series and parallel concepts into one circuit is the next step. Materials snap circuit kit stopwatch procedure part 1 1. What was the voltage drops across each of the resistors. 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. Set up each circuit and then measure the current and volage across each resistor.
Connect 3 bulbs in series and set the power supply to 2. If the following resistors were replaced with the values indicated. Seriesparallel circuits lab free class notes online. Most circuits have more than one component, called a resistor that limits the flow of charge in the circuit.