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A coil with air inside it has a self ind...

A coil with air inside it has a self inductance of 0.05 H. A soft iron rod of relative permeabiilty 100 is introduced inside the coil. The value of self inductance is

A

`5 xx 10^(2) H`

B

0.05 H

C

`0.05 xx 10^(-2) H`

D

5 H

Text Solution

Verified by Experts

The correct Answer is:
D
Self inductance is
`L_(1) = mu_(r )L_(0) = 100 xx 0.05 = 5H`
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