A straight conducting rod of length moves perpendicular to a uniform magnetic field…

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

Problem

A straight conducting rod of length

0.20\,\text{m}

moves perpendicular to a uniform magnetic field of

0.30\,\text{T}

with a velocity that varies with time as

v(t)=4t

, where

v

is in

\text{m s}^{-1}

and

t

\text{s}

. What is the magnitude of the emf between the ends of the rod at

t = 2.0\,\text{s}

? (a)

0.24\,\text{V}

(b)

0.96\,\text{V}

(c)

0.48\,\text{V}

(d)

0.12\,\text{V}