A rectangular coil ABCD is rotated anticlockwise with a uniform angular velocity about the axis shown In the fig. the axis of rotation of the coil as well as the magnetic field `B` are horizontally.the induced emf in the coilwould be minimum when the plane of the coil

Options

A. is horizontal
B. makes an angle of `45^(@)` with the direction of magnetic field
C. is at right angle to the magnetic field
D. makes an angle of `30^(@)` with the magnetic field.

Answer

C

Explanation

When the plane of the coil is perpendicular to the magnetic field, then `phi` is maximum and induce emf is minimum.