A conducting circular loop is placed in a uniform magnetic field, T with its plane…

PHYSICS · Subjective · CBSE · Physics · Electromagnetic Induction · Electromagnetic Induction

Problem

A conducting circular loop is placed in a uniform magnetic field,

B = 0.025

T with its plane perpendicular to the loop. The radius of the loop is made to shrink at a constant rate of

1 \text{ mm s}^{-1}

. The induced emf when the radius is

2 \text{ cm}

, is a)

2\mu\text{V}

\pi\mu\text{V}

2\pi\mu\text{V}

\frac{\pi}{2}\mu\text{V}