Physics (AS & A Level) · Oct / Nov 2023 · Paper 13 · Question 34

A cell of electromotive force (e.m.f.) 3.0 V and internal resistance 0.50 Ω is connected to a variable resistor, a voltmeter and an ammeter, as shown. The resistance of the variable resistor is varied. The reading on the ammeter I and the reading on the voltmeter V are recorded. Which graph shows how V varies with I ?

1. AGraph of V/V against I/A: straight line from (0, 0.50) to (6.0, 0)
2. BGraph of V/V against I/A: straight line from (0, 3.0) to (0.5, 0)
3. CGraph of V/V against I/A: straight line from (0, 3.0) to (6.0, 0)
4. DGraph of V/V against I/A: straight line from (0, 6.0) to (3.0, 0)

As printed in the paper