Question

What is motional emf? State any two factors on which it depends.

Answer 1

Motional emf is the emf induced in a conducting rod when it moves in a region of magnetic field.
Motional emf is calculated by $E=vBl$
where $B$ is the magnetic field and $l$ is the length of the rod and $v$ is the velocity of rod perpendicular to the length of the rod.
Motional emf depends on

1. The magnitude of length of rod and

2. Velocity of rod and

3. Magnetic field.