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A coil having N turns carry a current I ...

A coil having `N` turns carry a current `I` as shown in the figure. The magnetic field intensity at point `P` is

A

`(mu_(0)NIR^(2))/(2(R^(2)+x^(2))^(3//2)`

B

`(mu_(0)NI)/(2R)`

C

`(mu_(0)NIR^(2))/((R+x)^(2))`

D

Zero

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The correct Answer is:
A
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