A rod of length l rotates with a uniform angular velocity `omega` about an axis passing through its middle point but normal to its length in a uniform magnetic field of induction B with its direction parallel to the axis of rotation. The induced emf between the two ends of the rod is

Options

A. `2Bomega l^(2)`
B. `1/2Bomega l^(2)`
C. `B omega l^(2)`
D. zero

Answer

D

Explanation

Since there is no magnetic flux change due to rotation of rod hence the potential difference between two ends of the rod is zero.