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The ratio of the magnetic field at the c...

The ratio of the magnetic field at the centre of a current carrying circular wire and the magnetic field at the centre of a semi-circular coil made from the same length of wire will be

A

`2 : 1`

B

`4 : 1`

C

`1 : 2`

D

`1 : 4`

Text Solution

Verified by Experts

The correct Answer is:
B
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