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A circular coil of one turn in formed by a Length wire, which carries a current of . The magnetic field at the centre of coil is :-
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Important Questions on Magnetic Effect of Current
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A length of wire carries a steady current, is bent first to form a plane circular coil of one turn, same length now bent more sharply to give three turns of smaller radius. Magnetic field becomes :-
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Two concentric co-planner coils of equal turns have radii and Respectively. Same current flowing in both the coils in same direction. Now direction of current is reversed in one coil then ratio of magnetic field at their common centre in two conditions respectively :-
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Two concentric co-planar coils of turns and have radii ratio , respectively. Equal currents in both the coils flow in opposite directions. If net magnetic field is zero at their common centre, then is,
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Find out magnetic field at point ’O’ for the following current distributions.
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Find out magnetic field at point for the following current distributions.
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Find out magnetic field at point for the following current distributions.
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A conducting rod moves towards right with constant velocity in uniform transverse magnetic field. Graph between force applied by the external agent v/s velocity and power supplied by the external agent v/s velocity:
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If current is flowing in this system and the diameter of the loop is, then find magnetic field at point due to given current distribution.
