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A circular coil of 0.2 m diameter has 10...

A circular coil of 0.2 m diameter has 100 turns and carries a current of 0.1 ampere. The intensity of magnetic field at the centre of the coil is -

A

`6.28 xx 10^(-4) N//A.m`

B

`62.8 xx 10^(-4) N//A.m`

C

`6.28 xx 10^(-5) N//A.m`

D

`62.8 xx 10^(-5) N//A.m`

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