A magnetic field of $2 imes 10^{-2} \mathrm{~T}$ acts at right angles to a coil of area $100 \math

Question

A magnetic field of $2 	imes 10^{-2} \mathrm{~T}$ acts at right angles to a coil of area $100 \mathrm{~cm}^2$, with 50 turns. The average emf induced in the coil is 0.1 V , when it is removed from the field in $t$ second. The value of $t$ is

Professor PC Thomas Classes · Answer

$E = \frac{N \Delta B A}{\Delta t} \Rightarrow 0.1 = \frac{50 	imes 2 	imes 10^{-2} 	imes 100 	imes 10^{-4}}{t} \Rightarrow t = 0.1$ s.