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Two concentric circular coils of five tu...

Two concentric circular coils of five turns each are situated in the same plane. Their radii are 20 cm and 30 cm and they carry respectively 0.2 A and 0.3 A current in same direction. The magnetic field in tesla at the centre is

A

`(mu_(0))/(2)`

B

`10 mu_(0)`

C

`(5)/(2) mu_(0)`

D

`5 mu_(0)`

Text Solution

Verified by Experts

The correct Answer is:
D
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TARGET PUBLICATION-MAGNETIC EFFECT OF ELECTRIC CURRENT-CRITICAL THINKING
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