A metal disc of radius 100 cm is rotated at a constant angular speed of `60 rads^(-1)` in a plane at right angles to an external field of magnetic induction `0.05 wbm^(-2)` The emf induced between the centre and a point on the rim will be

Options

A. 3 V
B. 1.5 V
C. 6 V
D. 9 V

Answer

B