magnetism

Related Questions

• A thin rectangular magnet suspended freely has a period of oscillation equal to $T$. Now it is broken into two equal halves (each having half of the original length) and one piece is made to oscillate freely in the same field. If its period of oscillation is $T'$, then ratio $\frac{{T'}}{T}$is

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• Force between two identical bar magnets whose centres are rmetre apart is 4.8 N, when their axes are in the same line. If separation is increased to 2r, the force between them is reduced to

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• Magnetic field intensity is defined as

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• A magnet of magnetic moment M is situated with its axis along the direction of a magnetic field of strength B. The work done in rotating it by an angle of 180o will be

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• If a brass bar is placed on a vibrating magnet, then its time period

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