Question

In a uniform magnetic field. If a rod moves then Emf is induced. But if a closed loop moves in a plane perpendicular to uniform magnetic field then Emf induced will be 0?

Answer 1

Dear student,

The Emf induced in a conductor moving with velocity v in a plane perpendicular to uniform MF (B) is given by,
$e=-Bvl$
Where, l is the distance between the two ends of the object.
In rod, $l=L\left(\mathrm{length}\mathrm{of}\mathrm{the}\mathrm{rod}\right)$
So, Emf induced is non zero.
In closed loop, $l=0$
So, Emf induced is zero.
Regards.