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A circular coil of radius R carries an e...

A circular coil of radius R carries an electric current i. The magnetic field at a point on the axis at a distance x from the centre of the coil `(xgtgtR)` varies as

A

`B=(mu_(0))/(2)(IR^(2))/(x^(2))`

B

`B=(muIR^(2))/(2x^(3))`

C

`B=(muIR)/(2x^(2))`

D

`B=(mu_(0)IR)/(2x^(3))`

Text Solution

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The correct Answer is:
B
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