A rectangular coil of `20` turns and area of cross-section `25 cm^(2)` has a resistance of `100 ohm`. If a magnetic field which is perpendicular to the plane of the coil changes at the rate of `1000` telsa per second, the current in the coil is

Options

A. 50 A
B. `5A`
C. `1A`
D. `0.5A`

Answer

D

Explanation

`e=nA(dB)/(dt)`
`=20xx25xx10^(-4)xx100=50V`
`I=(e)/(R)=(50)/(10)=0.5A`