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The magnetic induction at a point at a l...

The magnetic induction at a point at a large distance `d` on the axial line of circular coil of small radius carrying current is `120muT` . At a distance `2d` the magnetic induction would be

A

`60muT`

B

`30 mu T`

C

`15mu T`

D

`240 mu T`

Text Solution

Verified by Experts

The correct Answer is:
C
`Balpha(1)/(x^(3))`
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