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A point P lies on the axis of a flat coi...

A point `P` lies on the axis of a flat coil carrying a current. The magnetic moment of the coil is `mu`. The distance of `P` from the coil is `d`, which is large compared to the radius of the coil. The magnetic field at `P` has magnitude

A

`(mu_(0))/(2pi)((mu)/(d^(3)))`

B

`(mu_(0))/(4pi)((mu)/(d^(3)))`

C

`(mu_(0))/(2pi)((mu)/(d^(2)))`

D

`(mu_(0))/(4pi)((mu)/(d^(2)))`

Text Solution

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The correct Answer is:
A
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