Physics (AS & A Level) · May / June 2019 · Paper 11 · Question 38

The diagram shows a potentiometer and a fixed resistor connected across a 12 V battery of negligible internal resistance. The fixed resistor and the potentiometer each have resistance 20 Ω. The circuit is designed to provide a variable output voltage. What is the range of output voltages?

1. A0 – 6 V
2. B0 – 12 V
3. C6 – 12 V
4. D12 – 20 V

As printed in the paper