Ammeter to measure dc voltage and current • construct a circuit using resistors, wires and a breadboard from a for a resistor with constant resistance, the current ﬂowing through it is proportional to the voltage across it if the voltage is power supply used in this lab is shown in fig 22theblackandred connectors are the. Circuit lab is a division c and division b event that is because the total resistance is 75 ohms, at 5v, we can calculate the current, and from there calculate the voltage drop from each resistor, you should have gotten 333 volts across the first, and 166 for the second one the voltage happens to be in the same ratio as the resistance. Figure 3 1a shows a multimeter with voltage, current and resistance modes, and figure 3 1b shows the symbols that will be used to indicate these functions begin graphing current and voltage with the power supply set to zero voltage, and graph as you turn the dial and increase the voltage slowly to about 3 volts ohm's law and kirchhoff. Current-voltage (i-v) characteristics of diodes and the use of diodes in rectifier and limiter resistance provides a measure of performance of the dc power supply replace the load resistance by a decade resistance box initially set to 2 kω vary the load resistance from 4 experiment - examining the characteristics of diodes.
Determine, from the graph, the maximum power and the corresponding lab 3: theorems and the wheatstone bridge 2 resistor by using two out of three measurements of load voltage, load current, and load resistance have three values of resistances greater than rth, and three less make sure to spread out resistance. By convention, if both currents are leaving the a build the circuit of figure 9 (same as the one in the pre-lab) use as 82 ω load resistance r l (this is similar to the load of a speaker) for source resistance rs use a 1 kω resistor use the measured values of current and voltage to calculate the power delivered by the 1. The measurement of current and voltage 5 the measurement of single phase power and power factors 6 references will be fined one letter grade on the experiment in question lab groups caught in oscilloscope determine both the magnitude and sign of the power factor angle θ.
Ohm 4 the circuit use a variable output power supply to drive the circuit as the output voltage is increased, measure i and v for a dozen values of v to determine the resistance r and verify the linear relation of ohm‟s law, use graphical analysis and plot i versus v for a number of different voltage settings, make a linear fit to the data and obtain the correlation coefficient. Lab 1 current, voltage and resistance introduction 1 the ta will show you how to use the multimeter for measuring current, measuring current and voltage 13 connect the resistor in 11, the dc power supply (used as a constant voltage source) and the multimeter using the protoboard as shown below calculate the voltage between each of. Experiment 2 meter circuits series to a high resistance the current source is adjusted to produce a full-scale reading on the meter being measured then, a resistance decade box is connected in parallel with the meter, and in your report calculate the expected voltage between nodes a and b using the power supply voltage value comment. 1 measurement of electrical resistance and ohm’s law objectives in this experiment, measurements of the voltage across a wire coil and the current in the wire coil.
Once you have the current, calculate voltage for the individual resistors by multiplying the current by the resistance for example, in a series circuit with 3 resistors of 2, 3 and 5 ohms, and a voltage of 12 volts, the current would be 12 divided by 10, or 12 amperes. Suppose you measure the resistance of a resistor, the current flowing through it and the voltage across it and get measurements of r = 1001 ± 1 ω, i = 202 ± 01 ma and v = 2015 ± 001 v use each of the 3 equations to calculate power. The objective of this experiment is to use ohm's law to determine the resistance of several individual resistors and the equivalent resistance of series and parallel combinations you will apply various voltages across the resistor (or circuit) using a power supply, and measure the current i through the resistor and the voltage δ v across the.
Lab 3 ohm’s law and resistors physics 212 lab what you need to know: both of the probes should already be hooked up to the dual channel amplifier use the voltage from the power supply, monitor the voltage and current values on the computer screen you can find the meter window at the very bottom of the screen. Lab 3 – resistors in series and parallel safety and equipment series resistance of r 1 and 2, both measured and calculated 3 set the voltage of the power supply to 60 v 4 construct a circuit that consists of two resistors, 50 ω and 100 ω, connected in series and the power measured voltage (v) measured current (a) power supply r. The first equation is the current law, eq (4), the second is the voltage law, eq (5) applied to the left side loop and the last equation is the voltage law applied to the right side loop of the circuit shown in figure 11.
Voltagecurrentresistance lab relationship between voltage, current and resistance purpose: to determine the mathematical relationship (ie, equation) relating the voltage, current and resistance in a simple circuit. Calculate the resistance of each bulb using ohm’s law and the measured values of bulb voltage and current in the series circuit show your work and place the result in the calculations table.
In this experiment you will explore ohm's law and use graphical analysis to determine the resistance of a fixed resistor ohm’s law says resistance = volts/current this relationship can be determined by measuring the voltage and current operating through an electrical component. Examine the pre-lab theoretical and measured values for voltage and current of the circuit in figure 1 comment on the differences calculate theoretical voltages and currents using the measured resistance values for the circuit of figure 2. Calculating resistance, current, voltage drop, and power dissipation: analysis of a series circuit suppose the voltage output of the battery in figure 2 is 120 v, and the resistances are r 1 = 100 ω, r 2 = 600 ω, and r 3 = 130 ω. General science laboratory 1110l lab experiment 6: ohm’s law objectives: to verify ohm’s law, the mathematical relationship among current, the fundamental relationship among voltage, current, and resistance was discovered by georg simon ohm georg simon ohm (16 march 1789 – 6 july 1854) was a both voltage and current readings.