A straight line conductor of length 0.4 m is moved with a speed of 7 m/s perpendicular to a magnetic field of intensity 0.9 Wb/`m^2`. The induced emf across the conductor is ____

Options

A. 1.26 V
B. 2.52 V
C. 5.04 V
D. 25.2 V

Answer

B

Explanation

Induced emf `|epsilon|=Bvl sin theta`
`=0.9xx7xx0.4xxsin90^@`
=2.52 V [`because sin 90^@`=1]