The magnetic flux linked with a single-turn coil varies with time according to (in mWb)

PHYSICS · Subjective · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

The magnetic flux linked with a single-turn coil varies with time according to

\Phi = 5t^{2} - 10t

(in mWb), where

t

is in seconds. The outward normal to the coil is taken as positive. (i) At

t = 1\,\text{s}

, will the induced current be clockwise or anticlockwise when viewed along the positive normal? (ii) Repeat the answer for

t = 3\,\text{s}