Physics (AS & A Level) · Oct / Nov 2020 · Paper 12 · Question 35

A resistor and a filament lamp are connected in series with a power supply. The I–V characteristics of the resistor and of the lamp are shown below. The potential difference (p.d.) across the resistor is 3.3 V. What is the resistance of the lamp?

1. A0.071 Ω
2. B4.2 Ω
3. C11 Ω
4. D14 Ω

As printed in the paper