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(a) Obtain the expression for the magnet...

(a) Obtain the expression for the magnetic energy stored in a solenoid in terms of magnetic field B, area A and length l of the solenoid. (b) How does this magnetic energy compare with the electrostatic energy stored in a capacitor?

A

`(B^(2)AL)/(2mu_(0)^(2))`

B

`(AL)/(2mu_(0))`

C

`(1)/(2)mu_(0)B^(2)AL`

D

`(B^(2)AL)/(2mu_(0))`

Text Solution

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The correct Answer is:
D
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