Which one of the following expressions gives the magnitude of the emf induced in a…

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

Problem

Which one of the following expressions gives the magnitude of the emf

\mathcal E

induced in a single loop when the magnetic flux

\Phi

linked with it changes with time? (a)

\mathcal E = \dfrac{1}{2}\left|\dfrac{d\Phi}{dt}\right|

(b)

\mathcal E = \left|\dfrac{d\Phi}{dt}\right|

(c)

\mathcal E = -\dfrac{d\Phi}{dt}

(d)

\mathcal E = BA\,\dfrac{d\theta}{dt}