By a change of current from 5 A to 10 A...

By a change of current from 5 A to 10 A in 0.1 s, the self induced emf is 10 V. The change in the energy of the magnetic field of a coil will be

A

5J

B

6J

C

`7.5 J`

D

9J

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The correct Answer is:

C

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