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The magnetic moment has dimensions of
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Important Questions on Magnetic Effect of Current
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The circular loop of a wire and a long straight wire carries currents and , respectively, as shown in the figure. Assuming that these are placed in the same plane. The magnetic fields will be zero at the centre of the loop when the separation is:-
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Under the influence of a uniform magnetic field , a charged particle is moving in a circle of radius with constant speed . The time period of the motion :
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A charged particle (charge ) is moving in a circle of radius with uniform speed . The associated magnetic moment is given by
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A beam of electron passes undeflected through mutually perpendicular electric and magnetic fields. If the electric field is switched off, and the same magnetic field is maintained, the electrons move
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In a mass spectrometer used for measuring the masses of ions, the ions are initially accelerated by an electric potential and then made to describe semicircular path of radius using a magnetic field . If and are kept constant, the ratio will be proportional to
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A particle of mass , charge and kinetic energy enters a transverse uniform magnetic field of induction . After , the kinetic energy of the particle will be:-
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A closed-loop carrying a current is placed in a uniform magnetic field. If the magnetic forces on segments , and are , and , respectively, and are in the plane of the paper and along the directions shown, the force on the segment is:-
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The magnetic force acting on a charged particle of charge in a magnetic field of acting in direction, when the particle velocity is , is
