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The self inductance L of a solenoid of l...

The self inductance L of a solenoid of length l and area of cross-section A, with a fixed number of turns N increases as

A

l andA increase

B

1 decreases and A increases

C

l increases andA decreases

D

both I and A decrease

Text Solution

Verified by Experts

The correct Answer is:
B
Self-inductance of a solenoid is given by
`L = (mu_(0)N^(2)A)/(l)`
From the above formula, we can see that l increases as/ decreases and A increases,
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