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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

`(1)/(x)`

B

`(1)/(x^(3//2))`

C

`(1)/(x^(2))`

D

`(1)/(x^(3))`

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CHHAYA PUBLICATION-ELECTROMAGNETISM -EXERCISE
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