Moving Charges and Magnetism

Related Questions

• 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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• Two thin long parallel wires separated by a distance b are carrying a current iamp each. The magnitude of the force per unit length exerted by one wire on the other is

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• A particle carrying a charge equal to 100 times the charge on an electron is rotating per second in a circular path of radius 0.8 metre. The value of the magnetic field produced at the centre will be (${\mu _0} = $ permeability for vacuum)

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• A uniform wire is bent in the form of a circle of radius $R$. A current $I$ enters at $A$ and leaves at $C$ as shown in the figure. If the length ABC is half of the length ADC, the magnetic field at the centre $O$ will be

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• A charged particle is released from rest in a region of steady uniform electric and magnetic fields which are parallel to each other the particle will move in a

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