A conducting circular loop is placed in a uniform magnetic field `0.04T` with its plane perpendicular to the magnetic field. The radius of the loop starts shrinking at `2mm//sec` . The induced emf in the loop when the radius is `2cm` is:
(1.) 3.2 π μ V
(2.) 4.8 π μ V
(3.) 0.8 π μ V
(4.) 1.6 π μ V

Options

A. ` 4.8 pi mu V`
B. `0.8 pi mu V`
C. ` 1.6 pi mu V`
D. `3.2 pi mu V`

Answer

D