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A wire in the from of a circular loop o...

A wire in the from of a circular loop of one turn carrying a current produces a magnetic fild `B` at the centre. If the same wire is looped into a coil of two turns and carreis the same current, the new value of magnetic induction at the centre is

A

`5B`

B

`3B`

C

`2B`

D

`4B`

Text Solution

Verified by Experts

The correct Answer is:
D
`B'=n^(2)B = (2)^(2)B=4B`
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