Question

9
.
A circular coil of radius R carries a current
i. The magnetic field at its centre is B. The
distance from the centre on the axis of the
coil where the magnetic field will be B/8 is​

Answer 1

Answer: HEY MATE HERE'S YOUR ANSWER

Explanation:As you know that magnetic field at point on the axis of current carrying ring is

where x is the point on the axis of ring, R is the radius of ring , i is the current carrying on ring and N is the number of turns .

at centre magnetic field ,

Now, A/C to question,

magnetic field at x = magnetic field at centre/8

This is possible only when x = ±√3R

Hence, √3R distance from the centre magnetic field is equal to magnetic field at centre .

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