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When direct current passed through a spring then it :-
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Important Questions on Magnetic Effect of Current
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A rectangular loop carrying a current i2, is situated near a long straight wire carrying a steady current i2. The wire is parallel to one of the sides of the loop and is in the plane of the loop as shown in the figure. Then the current loop will :-
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Two parallel beams of positrons moving in the same direction will :-
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Due to the flow of current in a circular loop of radius R, the magnetic field produced at the centre of the loop is B. The magnetic moment of the loop is :-
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A circular loop has a radius of 5 cm. and it is carrying a current of 0.1 A. its magnetic moment is :
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An electron is moving around a proton in an orbit of radius and produces of magnetic field at the centre, then find the angular velocity of electron,
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Current I is flowing in a conducting circular loop of radius R. It is kept in a magnetic field B which is perpendicular to the plane of circular loop, the magnetic force acting on the loop is :-
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A current carrying coil behave like tiny magnet. If area of coil is A and magnetic moment is ‘M’ then current through the coil is :-
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An electron revolves with frequency 6.6 × 1015 r.p.s. around nucleus in circular orbit of radius 0.53 Å of hydrogen atom, then magnetic field produced at centre of orbit is :-
