MHT CET 2022 Physics question
A current carrying circular coil of radius 'R' has a point P situated on its axis at a distance 'x' from its centre 'o' of the coil. The magnetic induction at point P is th of magnetic field at its centre o. The value of x is
Answer: (B)
Solution
Field on the axis of a circular loop: ; at the centre (): . Hence , so , giving
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