Question

A rectangular metallic loop is moving out of a uniform magnetic field region to a field free region with a constant speed. When the loop is partially inside the magnate field, the plot of magnitude of induced emf \((\varepsilon)\) with time (t) is given by

(1)

(2)

(3)

(4)

Answer 1

Correct option is : (4)

Motional emf : \(\varepsilon=\mathrm{B} \ell \mathrm{v}=\) constant