Electric circuits with resistors connected in series and parallel lab report

In circuit b we have resistors r 1 and r 2 combined to get. In other words, the current is the same at all points. In some cases when we do not get the desires or specific resistor values we have to either use variable resistors such as potentiometers or presets to obtain such precise values. In a series circuit, the resistance increases as more resistors are added in series. Resistors can be combined in simple circuit arrangements that increase or decrease the overall resistance in the circuit. It states that the amount of electric current flowing in a circuit is directly proportional to the voltage applied to the circuit, and inversely proportional to its resistance. Ammeters, used to measure current, must always be connected in series. The three resistors were more vertically stacked than in a line. The purpose of this lab experiment is to investigate ohms law and kirchhoffs rules using resistors in dc circuits connected in series and parallel. A series circuit has only one path for the electricity to follow. Simple resistor circuits introduction in this lab, we will investigate ohms law, and study how resistors behave in various combinations. To build our parallel circuit, we connected a power supply to three different resistors in parallel using wires and clips. Then we measured the voltage using the multimeter after. Part a shows two electrical circuits which are compared.

Emt 1150 lab professor aparicio carranza electrical circuits. Highpass, lowpass, bandpass, and notch 42 lab 8 transformers 52 lab 9 twoport network characterization 61 lab 10 final exam 70 appendix a safety 72. Resistors, series and parallel wiring free download as powerpoint presentation. Lab 4 resistors in series and parallel introduction. To use ohms law to calculate equivalent resistance of series and parallel circuits. Two resistors r1 and r2 are connected in series if all the current that passes through r1 also. Calculate the effective capacitance in series and parallel given individual capacitances. Appendixc appendix dmm objective the objective of this lab is to study circuits with resistors connected in series, parallel, and combination. 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.

Referring to the example combining series and parallel circuits and figure 5, calculate i 3 in the following two different ways. Suppose three resistors r 1, r 2 and r 3 are connected in parallel across a voltage source of v volt as shown in the figure. A complete lab writeup includes a title, a purpose, a data section, and a conclusiondiscussion of results. Sep 25, 20 this lab specifically investigates series circuits, parallel circuits and cells. Electrical dc series and parallel circuit electrical4u. In this experiment, you will construct circuits using multiple resistors. Resistors in series and parallel physics libretexts.

Procedure the first part of this lab consisted of identifying the ohm value for each of the resistors used in the circuit by using the color code, then we identified the ohm value using the digital multimeter, and recorded. Laboratory in wave motion, electricity, magnetism and optics phys 2240 uploaded by. Apparatus equipment to examine the voltage and current flow in a series and parallel circuit of resistors. Series and parallel circuit elements research paper 1580 words. Entering the given capacitances into the expression for gives. It is well to note at this point that the total resistance of parallel connected resistors will always be less than the resistance of smallest of the individual resistors. In the second part of this lab well hook them together as in figure 2. Two resistors r 1 and r 2 are connected in series if all the current that passes through r 1 also passes through. Series and parallel circuits objectives to study current flow and voltages in series and parallel circuits. Determine if everyday objects are conductors or insulators, and take measurements with an ammeter and voltmeter. Components in an electrical circuit are in series when they are connected. Lab report series and parallel circuits electrical resistance and. I performed a series of experiments with different configurations of resistors, measuring the voltage and current across each resistor.

When unequal resistors are connected in parallel in a circuit, answer choices. Apr 22, 2016 resistors in series or complicated resistor networks can be replaced by one single equivalent resistor, req or impedance, zeq and no matter what the combination or complexity of the resistor. In a series connection, the current flowing in and out of the components is equal, however the voltage is different. The sum of the potential differences of the resistors is equal to the potential difference of the battery. Capacitors in series and parallel lab report coursework. That is, the currents i1 and i2 through each of the resistors add to give the total current, i, flowing into and out of the network. These circuits can either be connected in series or in parallel.

Parallel resistors calculate the effective resistance of those two resistors when placed in the corresponding configuration. A series resistor circuit is an electronic circuit in which all the resistors are connected one after another in the same path so that the same current flows through each and every resistor. The most common place you will encounter electric circuits is across them. When a set of resistors are connected in parallel, the effective resistance is always smaller then the smallest in the set. Procedure first, we measured the resistance of one resistor alongside a switch on a breadboard and two resistors in series with a switch as well. When resistances are connected in series, the total resistance offered is the sum of. When resistors are in parallel, the current flowing from the battery will come to a junction where it has a choice as to which branch to take.

Lab 1 intro to dc circuits department of electrical. Batteries and generators add some resistance to a circuit. A measure of this limit on charge flow is called resistance. Physics 215 experiment 11 series and parallel circuits. Consider a circuit consisting of a single cell and three resistors that are connected in parallel. Series parallel resistor circuits consist of combinations of series connected and parallel connected resistors. Identify series and parallel parts in the combination of connection of capacitors.

When one light bulb goes out in a series or a parallel circuit, what happens to the other light bulbs. Both laboutputs can be connected in parallel or in series by means of a switch on. Increasing the number of resistors connected in parallel decreases the overall resistance of the circuit. The proper connection for ammeter and voltmeter was also conducted and the readings for the voltage and current were obtained. In a series circuit, the current is the same at all points in the circuit. In that case, there was only a certain path the current could take, namely through the resistors, and along the wires joining the resistors. With circuit connected, turn on the power supply and measure the voltage. A voltmeter was used to obtain our measurements for this circuit as well. The total resistance of a combination of resistors depends on both their individual values and. Three resistors connected in series to a battery left and the equivalent single or series resistance right. In this lab we will measure and analyze currents and voltages for circuits. It states that the amount of electric current flowing in a circuit is directly proportional to the voltage applied to the circuit, and inversely proportional to. In the first activity, we aimed to know the strong electric current and voltage in series circuit.

The resistance of a resistive circuit element changes with temperature. With the given information, the total capacitance can be found using the equation for capacitance in series. The same resistors were then connected in parallel and the current into each. In a parallel circuit, the electrical current flows through. If you compare this result with the combination of capacitors in series, youll find the result of capacitors in series to be similar to the combination of resistors in parallel explained below. The current in an electrical parallel circuit divides.

A combined network is any combination of series and parallel circuits wired together. To compare the characteristics of series circuits to the characteristics of parallel circuits. Which one of the following statements is correct about this combination. Resistors in series and parallel boundless physics. The simplest combinations of resistors are the series and parallel connections. An electric circuit consists of a completer closed path or paths for electric current. Note that the resistors are connected to each other at two points. Conclusion from the experiment we have done, we can conclude that type of. To examine the voltage and current flow in a series and parallel circuit of resistors. Four unequal resistors are connected in series with each other. Series parallel circuit series parallel circuit examples. Electric circuit analysisresistors in parallel wikiversity.

Oct 31, 2014 part 2 determine the current and voltage through current dividers and voltage dividers. The same current passes through each component in the circuit. Lab 3 capacitors and series rc circuits 9 lab 4 inductors and series rl circuits 18 lab 5 parallel rc and rl circuits 25 lab 6 circuit resonance 33 lab 7 filters. Part a shows original circuit with three resistors connected in series to a.

Not required equipment list qty items part numbers 1 acdc electronics lab em8656 2 d cell 1. Adjust the power supply until the potential difference across the resistors is 1. The brightness of the light bulbs in series and parallel. In this experiment, we could learn the difference between resistors in series and parallel. Resistance, current, and circuits phy208 spring 2008.

The total resistance of a combination of resistors depends on both their individual values and how they are connected. Sep 02, 2011 what do you notice about the relationship between the three voltage readings v 1, v 2, and v tot in parallel circuits. Resistors in series and parallel resistors in series. In circuits, resistors provide electrical resistance. The purpose of this experiment is to explore the relationship between voltage and current in networks of resistors connected in series and in parallel by constructing 6 simple circuits. Lab report on series and parallel circuit free essays.

To calculate the voltages and currents in simple circuits involving only resistors using the rules for adding series and parallel resistors. A series circuit is a circuit in which resistors are arranged in a chain, so the current has only one path to take. For parallel connected resistors, however, current is divided. In a parallel circuit, the current splits between the available paths. Derive expressions for total capacitance in series and in parallel. In series they were connected one after the other, but in parallel, as the name suggests, they are side by side in the circuit. View the circuit as a schematic diagram, or switch to a lifelike view.

Draw a circuit with resistors in parallel and in series. To study the equivalent resistances of two fundamental connections of resistors resistors in series and in parallel. Resistors are said to be connected in series when they are connected as. Notice the voltmeter has leads in the com and v ports and is connected from one side of the resistors to the other side. Have performed experiment about series and parallel circuit. Several capacitors may be connected together in a variety of applications. Build circuits with batteries, resistors, light bulbs, fuses, and switches.

The purpose of the lab is to find the equivalent resistance for components in an electrical circuit in series and parallel. It was realized thatkirchhoffs laws for current and voltage are given by equations 1 and 2. Electric circuits the following information is provided to the student. Seriesparallel circuits seriesparallel circuits can be more complex as in this case. This is needed in a circuit to start the electrons moving. Physics 215 experiment 11 series and parallel circuits 45 5. I also used light bulbs and parallel circuits to demonstrate the visual concepts of resistors in series and parallel. The first principle to understand about parallel circuits is that the voltage is equal across all components in the circuit. Series and parallel circuits lab report phys 2240 studocu.

Electrical resistance and the resistor introduction ohms law is the most fundamental equation in electric circuit analysis. Resistors connected in series are potential dividers. The objective of this lab is to study resistances connected in series, parallel, and combination circuits. How can two filaments be used to produce three different illumination levels. Along the way, you will establish that certain measurements are a ected by the way in which circuit elements are connected to each other. In our previous post about resistors, we studied about different types of resistors. For the current divider circuit in figure 10 calculate the total effective resistance that is seen by the supply for each setting of r 2. Most circuits have more than one component, called a resistor, that limits the flow of charge in the circuit. To practice more complicated construction of circuits. This activity will allow you to explore a model circuit and decide whether these light circuits are connected in series or in parallel.

I also used the ohms law to determine the calculated values and compare. Resistors, series and parallel wiring series and parallel. Part 2 determine the current and voltage through current dividers and voltage dividers. These arrangements are called series and parallel circuits. Physic lab 5 series and parallel circuits please help me to correct my lab report and write the conclusion abstract. A parallel circuit has two or more paths for the electricity. The simplest combinations of resistors are the series and parallel connections illustrated in. The data section includes a diagram of the two circuits being compared and a documented record of procedure and observations. Increasing the number of cells connected in parallel with each other has no effect on the current strength and the potential difference of the circuit. If one of the resistors in a series circuit stops working, the current will not be able to flow through the rest of the circuit. Series circuits series and parallel circuits siyavula. Resistors connected in parallel are current dividers.

Resistors r2 and r3 are seen to be connected in parallel, and resistor r1 is in series with the parallel combinations of r2 and r3. Analysis on series and parallel circuits an electrical network is an interconnection of electrical elements such as resistors, inductors, capacitors, transmission lines, voltage sources, current sources, and switches. The objective of this lab is to study circuits with resistors connected in series, parallel, and combination. Consider finding the equivalent resistance of the network shown below. In series connection, we deduced that voltage is divided amongst resistors. A student in a physics lab mistakenly wired a light bulb, battery, and switch as shown in link. The means by which the resistors are connected will have a major effect upon the. Physic lab 5 series and parallel circuits please h. To compare the current and voltage distribution in parallel and series circuits. The current strength in a series circuit is the same throughout the entire circuit. Resistive elements are not connected in series or parallel. Increasing the number of resistors in a series circuit increases the overall resistance of the circuit.

Theory in the previous experiment, you constructed 4 circuits, each circuit built with one resistive element. Open the dc power supply set up file provided with the lab. Experiment 3 resistors in series and in parallel print this page to start your lab report 1 copy print 2 copies of this file data page object. We see the resistors r 1 and r 2 are connected in series. Notes to the teacher series circuits have only one path so all devices are connected endtoend. In both parts explicitly show how you follow the steps in the problemsolving strategies for series and parallel resistors above. Open the dc power supply set up file provided with the lab instructions. Since the electrical force is a conservative force, the sum of the voltage. When resistors are connected in series, the current through each resistor is the same. Resistors in series and parallel combinations electronics post. If r is constant, the same for all v, then the circuit element obeys ohms law. A series circuit has the same current flowing through all resistors adjacent to each other in series, ii1i2et cetera. And we can see the relationship of the resistances, current and voltage in circuit which related to ohms law. In this experiment it was expected of the experimenter to have a basic knowledge of.

In this experiment you will examine the difference between series and parallel circuits. Using the definitions for equivalent resistance for resistors in parallel, we can analyze some circuits with these setups. The laws on series and parallel resistors, as well as the color code for resistors were observed to calculate the total resistance. An electrical circuit is a network that has a closed loop, giving a return path for the current.

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. Hence the equivalent resistance of resistors in series combination is the sum of the resistances of all resistors connected in an electric circuit. The experiment is about the elements of series and parallel circuits. Lab 9 series rlc circuits 38 lab 10 statistical analysis 44 lab 11 design lab 47. In parallel circuit, the voltage is the same for every component of the circuit, however the current is not the same. Oct 07, 2015 resistors in series and parallel combinations. The lab use the ohms law iru to find the equivalent resistance.

To investigate the circuits to tell whether the resistors are in parallel or in series also to determine the internal resistance of a 1. To analyze this type of circuit, it should first be simplified reduced to an equivalent resistor, req. Feb 22, 2015 our series circuit looked like the one in the sketch below. In part a of the lab, you looked at how resistors acted in series and parallel in electric circuits. Two resistors r1 and r2 are connected in parallel if the voltages v1 and v2 across each are the same and equal to the voltage, v, across the parallel network. The total resistance of such a circuit is obtained by simply adding up the resistance values of the individual resistors. Figure 1 shows a circuit diagram of a very simple threeresistor seriesparallel circuit.

Let i ampere be the total circuit current which is divided into current i 1, i 2 and i 3 flowing through r 1, r 2 and r 3 respectively. Most circuits have more than one component, called a resistor that limits the flow of charge in the circuit. Series and parallel resistors goals to understand the fundamental difference between resistors connected in series and in parallel. As resistors are added in series to a circuit, the total resistance will.

Jared explains why bulbs in a parallel circuit are brighter than bulbs in a series circuit. Firstly, the knowledge of the differences between series and parallel circuits was the basic skill used to wire up our houses. Write a summary statement concerning resistance in series. You will be building circuits similar to the ones you will be working with in homework and exam problems. Resistors in series and parallel electric circuits. The equivalent resistance rp of r1 and r2 in parallel. Find the total capacitance for three capacitors connected in series, given their individual capacitances are 1.