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A circular current carrying coil has a r...

A circular current carrying coil has a radius R. The distance from the centre of the coil on the axis where the magnetic induction will be `(1)/(8)` th to its value at the centre of the coil, is

A

3a

B

`sqrt(3)a`

C

`(a)/(3)`

D

`(a)/(sqrt(3))`

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The correct Answer is:
B
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