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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 H

B

0.05 H

C

2.5 H

D

10 H

Text Solution

Verified by Experts

The correct Answer is:
A
`L_(m)=mu_(r)L_(a)`
`=100xx0.05=5H`
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