A single circular loop of radius lies in the -plane

PHYSICS · Single correct · CBSE · Physics · Electromagnetic Induction · Electromagnetic Induction

Problem

A single circular loop of radius

20\,\text{cm}

lies in the

xy

-plane. The magnetic field in the region is perpendicular to the loop and given by

B = 0.50\, r\, t\;\text{T}

(with

r

in metres and

t

in seconds) for

0 \le r \le 0.20\,\text{m}

. Calculate the magnitude of the induced EMF in the loop at

t = 2.0\,\text{s}

. (a)

12.6\,\text{mV}

(b)

8.4\,\text{mV}

(c)

17\,\text{mV}

(d)

4.2\,\text{mV}