The magnetic flux through a loop varies with time according to

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

Problem

\Phi = (4t-2)\times10^{-3}\,\text{Wb}

, where

t

is in seconds. Find the induced emf in the loop at

t = 2\,\text{s}

. (a)

+6\,\text{mV}

(b)

-8\,\text{mV}

(c)

-4\,\text{mV}

(d)

+4\,\text{mV}