1. Connect the circuit as shown in Fig.1.
2. Ask the Supervisor to check the circuit.
3. Copy Table 1 into your answer booklet.

 

Voltage Reading (V)	Ammeter Reading (mA)
0
2
4
6
8
10
12

                                                                                                  Table 1

1. Adjust the variable power supply to read 0V on the voltmeter.
2. Close switch S.
3. Read and record in Table 1 the corresponding ammeter reading.
4. Repeat steps (d) and (f) for voltage values as indicated in Table 1.
5. Plot a graph of voltage (V) on the vertical axis against current (I) on the horizontal axis.
6. Calculate the slope of the graph.
7. Comment on the shape of the graph.
8. Which law does the relationship in (i) obey?