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If the number of turns per units length ...

If the number of turns per units length of a coils of solenoid is doubled , the self- inductance of the soleniod will

A

remain unchanged

B

be halved

C

be doubled

D

become four times

Text Solution

Verified by Experts

The correct Answer is:
D
Slef inductance of a soleonoid `=mu_(0)n^(2)Al`
when n is the number of turns per length
`:.` Self inductance is directely proptional to `n^(2)`. Self inductance becones 4 times whenn is doubled
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NCERT FINGERTIPS-ELECTROMAGNETIC INDUCTION-Inductance
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