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A circular coil of radius R carries an ...

A circular coil of radius `R` carries an electric current. The magnetic field due to the coil at a point on the axis of the coil located at a distance `r` from the centre of the coil, such that `r gtgt R`, varies as

A

`1//r`

B

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

C

`1//r^(2)`

D

`1//r^(3)`

Text Solution

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The correct Answer is:
D
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