For an ohmic conductor kept at a constant temperature

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

Problem

For an ohmic conductor kept at a constant temperature, how does the current

I

vary with the applied potential difference

V

? (a)

I

varies as

V^{2}

, giving a parabolic curve (b)

I

varies inversely with

V

so that

VI

is constant (c)

I

is directly proportional to

V

, giving a straight line through the origin (d)

I

rises exponentially with

V