Moving Charges and Magnetism

Related Questions

• An electron moves with a constant speed v along a circle of radius r. Its magnetic moment will be (e is the electron's charge)

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• A long solenoid is formed by winding 20 turns/cm. The current necessary to produce a magnetic field of 20 millitesla inside the solenoid will be approximately$(\frac{{{\mu _0}}}{{4\pi }} = {10^{ - 7}}\,tesla - metre/ampere)$

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• A circular loop of radius 0.0157m carries a current of 2.0 amp. The magnetic field at the centre of the loop is $({\mu _0} = 4\pi \times {10^{ - 7}}\,weber/amp - m)$

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• Three long, straight and parallel wires carrying currents are arranged as shown in the figure. The wire C which carries a current of 5.0 amp is so placed that it experiences no force. The distance of wire C from wire D is then

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• Magnetic dipole moment of a rectangular loop is

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