Experiment 1 of BEENG about OHMS LAW PDF

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An answer/solution for experiment 1 without the questions...

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Experiment 1: Familiarization with DC Measurement Objectives: To learn how to use the different DC measuring device. Materials Required: • • • • •

Multimeter Breadboard Connecting wires DC power supply (variables) 0 – 30 V Resistors ½ watts, ±5 % (R1 = 1 k , R2 = 2 k, R3 = 100, R4 = 4.7 k

Procedure: I. Connect the voltmeter and the ammeter: 1. Connect the circuit drawn in the figure 1. Adjust the DC power supply voltage and use resistor R. Use the voltmeter and ammeter. 2. Turn on the power supply. Record the voltage and current as indicated by the voltmeter and ammeter in the Table 1. 3. Turn off the power supply. 4. Repeat steps 2 – 3 for each of the voltage and resistance, using voltage indicated in Table 1. II. Using a digital multi- meter for resistance measurement: 1. Set the selector switch of the multi – meter to the “ohms” position. You are now ready to measure resistance. 2. Connect the resistance R1 across the terminals of the multi- meter. Be sure that your hand does not touch ends of the resistor. 3. Read and record the indication of the meter in the Table 2. 4. Replace the resistor R1 by each of the resistor given. Read and record all results. 5. Compute the percentage difference between the nominal value and measured value of the resistance.

Table 1: Voltmeter and Ammeter Reading R1 2V 4V 6V 8V 10V

R2

A A A A A

V V V V V

A A A A A

R3 V V V V V

A A A A A

R4 V V V V V

A A A A A

Table 2: Resistance Measurement R1 Nominal Measured % Difference

R2

R3

R4

V V V V V...