A circular loop placed in a plane perpendicular to the plane of paper carries a current when the key is ON. The current as seen from points A and B (in the plane of paper and on the axis of the coil) is anti clockwise and clockwise respectively. The magnetic field lines point from B to A. The N-pole of the resultant magnet is on the face close to
Answer is (a) A
Explanation:
Direction of Magnetic field will be from south to northpole. Point A is showing northpole because field lines are pointing from B to A.
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