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A copper wire is wire is wound on a w...

A copper wire is wire is wound on a wooden frame, whose shape is that of an equilateral triangle.If the number of turns of the coil per units length of the frame the same, then the self inductance of the coil:

A

decreases by a factor of ` 9 sqrt3`

B

decreases by a factor of 9

C

increases by a factor of 27

D

increases by a factor of 3

Text Solution

Verified by Experts

The correct Answer is:
C
Since No. of turns per unit length remain same.
`L prop n^(2) l implies ` increases by 3.
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