Question

in the following figure a wire bent in the form of a regular polygon of n sides is inscribed in a circle of radius a net magnetic field at the centre will be

Answer 1

Answer:

Explanation:

Seen in photo

The formula is general formula

If you try to find magnetic field of equilateral triangle you put n=3 answer get and if you find magnetic field of square put n=4 because square has a 4 side

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