A resistor dissipates of power while its resistance is

PHYSICS · Single correct · GCSE · Physics · Electricity · Electricity

Problem

A resistor dissipates

18\,\text{W}

of power while its resistance is

12\,\Omega

. What is the potential difference across the resistor? (a)

15\,\text{V}

(b)

21.6\,\text{V}

(c)

14.7\,\text{V}

(d)

18\,\text{V}