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A long solenoid of N turns has a self-in...

A long solenoid of `N` turns has a self-induced `L` and area of cross-section A. When a current `i` flows through the solenoid, magnetic field inside it has magnitude `B` . The current `i` is equal to

A

`BAN//L`

B

`BANL`

C

`BN//AL`

D

`B//ANL`

Text Solution

Verified by Experts

The correct Answer is:
A
`phi=Li implies NBA=LIimpliesI=(NBA)/L`
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