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A coil is wound as a transformer of rect...

A coil is wound as a transformer of rectangular cross section. If all the linear dimension of the transformer are increased by a factor `2` and the number of turns per unit length of the coil remain the same, the self-inductance increased by a factor of

A

2

B

4

C

6

D

8

Text Solution

Verified by Experts

The correct Answer is:
D
Self inductance of solenoid,
`L=mu_(0)n^(2)Al`
`therefore LpropAlprop`(Linear dimension)
`therefore Lprop(2)^(3)=8`
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