Two wires P and Q are each connected across the same supply

PHYSICS · Single correct · A Level · Physics · Electricity · Electricity

Problem

Two wires P and Q are each connected across the same

15\,\text{V}

supply. The currents measured are

1\,\text{A}

in wire P and

3\,\text{A}

in wire Q. What is the ratio of the resistance of P to that of Q? (a)

1:3

(b)

2:1

(c)

3:1

(d)

1:1