A square loop of side and closely wound turns is held with its plane normal to a…

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

Problem

A square loop of side

20\,\text{cm}

and

100

closely wound turns is held with its plane normal to a uniform magnetic field. The field increases uniformly from

0.30\,\text{T}

0.90\,\text{T}

4.0\,\text{ms}

. Determine the average emf induced in the loop during this interval.