A square coil of side and 200 turns starts from rest and rotates about a fixed axis…

PHYSICS · Multi-part · CBSE · Physics · Electromagnetic Induction · Electromagnetic Induction

Problem

A square coil of side

10\,\text{cm}

and 200 turns starts from rest and rotates about a fixed axis with a constant angular acceleration of

25\,\text{rad s}^{-2}

in a uniform magnetic field of

0.20\,\text{T}

. The normal to the coil is parallel to the magnetic field at

t = 0

. (i) Obtain an expression for the emf induced in the coil as a function of time. (ii) Calculate the emf at

t = 0.10\,\text{s}