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Two concentric circular coils of 10 turn...

Two concentric circular coils of 10 turns cach are situated in the same plane. Their radii are 20 cm and 40 cm and they carry respectively 0.2A and 0.3A current in oponite direction. The magnetic field io tesla at the centre is

A

`[(35/4)mu_0]`

B

`(mu_0/80)`

C

`[(7/80)mu_0]`

D

`[(5/4)mu_0]`

Text Solution

Verified by Experts

The correct Answer is:
D
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