Moving Charges and Magnetism

Related Questions

• A proton moving with a velocity, $2.5 \times {10^7}m/s$, enters a magnetic field of intensity 2.5T making an angle ${30^o}$ with the magnetic field. The force on the proton is

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• The magnetic induction at any point due to a long straight wire carrying a current is

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• If m is magnetic moment and B is the magnetic field, then the torque is given by

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• A long wire carries a steady current. It is bent into a circle of one turn and the magnetic field at the centre of the coil is B. It is then bent into a circular loop of n turns. The magnetic field at the centre of the coil will be

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• A straight wire of length $({\pi ^2})$ metre is carrying a current of $2A$ and the magnetic field due to it is measured at a point distant 1 cm from it. If the wire is to be bent into a circle and is to carry the same current as before, the ratio of the magnetic field at its centre to that obtained in the first case would be

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