A metal conductor of length 1 m rotates vertically about one of its ends at angular velocity 5 `rads^(-1)`. If the horizontal component of earth's magnetic field is `0.2 xx 10^(-4)` T, then the emf developed between the ends of the conductor is

Options

A. `5 mu V`
B. 5 mV
C. `50 mu V`
D. 50 mV

Answer

C

Explanation

`e = (1)/(2) B lambda^(2) omega = 5 mu V`