L is a circular loop (in y-z plane) carr...

L is a circular loop (in y-z plane) carrying an anticlockwise current. P is a point on its axis OX dl is an element of length on the loop at a point A on it. The magnetic field at P

due to L is directed along OX.

due to kl is directed along OX.

due to dl is perpendicular to AP in upwards direction

due to dl is perpendicular to AP in downwards direction

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A, D

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