magnetism

Related Questions

• The direction of line of magnetic field of bar magnet is

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• The bob of a simple pendulum is replaced by a magnet. The oscillations are set along the length of the magnet. A copper coil is added so that one pole of the magnet passes in and out of the coil. The coil is short-circuited. Then which one of the following happens

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• The figure below shows the north and south poles of a permanent magnet in which n turn coil of area of cross-section A is resting, such that for a current i passed through the coil, the plane of the coil makes an angle $\theta $with respect to the direction of magnetic field B. If the plane of the magnetic field and the coil are horizontal and vertical respectively, the torque on the coil will be

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• At a certain place a magnet makes 30 oscillations per minute. At another place where the magnetic field is double, its time period will be

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• Relative permeability of iron is $5500$, then its magnetic susceptibility will be

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