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A solenoid has 2000 turns would over a l...

A solenoid has 2000 turns would over a length of 0.30 m. The area of its cross-section is `1.2xx10^(-3)m^(2)`. If an initial current of 2 A in the solenoid is reversed in 0.25 s, then the emf induced in the coil is

A

`8.6xx10 ^(-2) V`

B

`4.8xx10 ^(-2) V`

C

`1.2xx10 ^(-2)V`

D

`6.0 xx 10^(-2) V`

Text Solution

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The correct Answer is:
B
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