Question

Current is passing into a circular loop in clock wose direction.Then magnetic field at the centre of the loop.
A) downward direction
B)zero
C)Inversly propotional to square of radius of circular loop
D)Up ward direction.

Reason must...
MCQ question.
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Answer 1

The magnetic field at the loop is in upward direction. This was found by the Right Hand Rule. The current is shown by the thumb and the other fingers are curled which shows the direction of the magnetic field.