A circular loop of radius `r`, having `N` turns of a wire, is placed in a uniform and constant magnetic field `B`. The normal of the loop makes an angle `theta` with the magnetic field. Its normal rotates with an angular velocity `omega` such that the angle `theta` is constant. Choose the correct statement from the following.

Options

A. emf in the loop is `(Nbomegar^(2))/(2)costheta`.
B. emf induced in the loop is zero.
C. emf must be induced as the loop crosses magnetic lines.
D. emf must not be induced as flux does not change with time.

Explanation

Flux remains constant here, so emf induced is zero.