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If the number of turns per unit length o...

If the number of turns per unit length of a coil of solenoid is doubled, the self-inductance of the solenoid will

A

remain unchanged

B

be halved

C

be doubled

D

become four times

Text Solution

Verified by Experts

The correct Answer is:
D
Self inductance of a solenoid `= mu_(0)n^(2)Al`
when n is the number of turns per unit length.
So self induction `prop n^(2)`
So inductance becomes 4 times when number of turns per unit length is doubled.
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