A resistor is connected to a constant-voltage source

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

Problem

A resistor is connected to a constant-voltage source. If the supply voltage increases by

10\%

while the resistance simultaneously decreases by

10\%

, the power dissipated by the resistor (a) increases by about

30\%

(b) increases by about

21\%

34\%

(d) increases by about

49\%