Q.

Current is passing into a circular loop in clockwise direction, then magnetic field at the centre of the loop

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a

inversely proportional to the square of radius of circular loop

b

zero

c

downward direction

d

upward direction

answer is A.

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Detailed Solution

Current is passing into a circular loop in clockwise direction, then the magnetic field at the centre of the loop at the centre is downward direction and inversely proportional to the square of radius.

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