Lab 03: Resistance and Resistivity - UCA
1 Measure and record the diameter (d) of the wire using the vernier calipers Use this to calculate the cross-sectional area of the wire 2 If you have not already, graph the voltage and current data for each length of wire The slope of each line is the resistance for that specific length of wire Keep track by making a table of
Experiment 1: Electrical Resistance and the Resistor
Measure the resistance, R TS, of the combination as shown in the circuit’s schematic diagram below A connection example is shown on the right Ohmmeter leads connect between points a and b R TS = _____ (measured total series resistance) 2 Calculate the theoretical resistance of this series combination as given the equation: RRRR
Lab 2: Resistance, Current, and Voltage
An ohm is a volt per ampere Because amps are so large, useful resistances are often on the order of kiloohms (kΩ) or megaohms (MΩ) d All real circuit elements have some resistance However, when the circuit contains resistors or light bulbs, the comparatively small resistance of other circuit elements such as wires can often be neglected 4
Resistance and Ohms Law
Goal: To test Ohm's law with a carbon resistor, measure resistances in series and parallel, and to measure the current-voltage characteristics of a light bulb Lab Preparation For many conductors, especially metals, the current flowing through a device is proportional to the voltage difference applied to the device: the ratio of the
Experiment 4 ~ Resistors in Series & Parallel
2 Measure their individual resistances using your multimeter and record these values in Table 3 3 Calculate the equivalent resistance, R eq, for the three resistors hooked up as in Figure 5, first using your measured resistances (record as Measured R eq in Table 3), and then using the values from the color code chart (record as Color Code R
EXPERIMENT 3 Resistors in Series and in Parallel
measure the voltages and currents Get to the appropriate program to run this experiment with the help of your instructor Use the method learned from the previous experiment to measure the resistances of the three resistors R1, R2 and R3 You do not have to make a hard copy of the plot, but do use the linear fitting program to obtain the
Experiment 1: Multimeter Measurements on DC Resistive Circuits
8 Measure the source current using the Keithley 2000 and enter the current value on the Data Sheet 9 Measure the voltage across each of the four resistors of the circuit and the source voltage using the Fluke 45 Enter these voltage values on the Data Sheet Page 3 of 4 R M Laurie and Glen Archer
EE 442 Lab Experiment No 2 - Iowa State University
EE 442 Laboratory Experiment 2 Introduction to the Measurement of Voltage, Current, Resistance; and Voltmeter Loading of a series circuit is the same, the current flow through the meter will
La résistance électrique
Conclusion : * Tous les objets conducteurs du courant possèdent une résistance, plus ou moins grande * Un isolant possède une résistance trop grande pour être mesurée Remarque : Le corps humain possède une résistance dont la valeur diminue lorsque la peau est humide Les risques d'électrocution sont alors plus élevés
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