A circular coil of 100 turns and radius is kept with its plane perpendicular to a…

PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

A circular coil of 100 turns and radius

10\,\text{cm}

is kept with its plane perpendicular to a uniform magnetic field. The field increases uniformly from

0.20\,\text{T}

0.80\,\text{T}

0.10\,\text{s}

. What is the magnitude of the average induced EMF in the coil? (a)

15.7\,\text{V}

(b)

18.8\,\text{V}

(c)

31.4\,\text{V}

(d)

9.42\,\text{V}