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Force exist on a current carrying wire which is placed in external magnetic field, due to :-
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Important Questions on Magnetic Effect of Current
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A wire PQRST carrying current I = 5A is placed in uniform magnetic field B = 2T as shown in figure If the length of part QR = 4 cm and SR = 6 cm then the magnetic force on SR edge of the wire is :-
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P, Q and R long parallel straight wires in air, carrying currents as shown. The direction of resultant force on R is :-
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Two parallel wires in free space are 10 cm apart and each carries a current of 10 A in the same direction. The magnetic force per unit length of each wire is :-
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Wire in the form of a right angle , with and carries a current of . There is a uniform magnetic field of perpendicular to the plane of the wire. The force on the wire will be :-
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When alternating current passes through a spring then it :-
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When direct current passed through a spring then it :-
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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 :-
