magnetism

Related Questions

• Which of the following, the most suitable material for making permanent magnet is

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• The magnet can be completely demagnetized by

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• Two magnets are held together in a vibration magnetometer and are allowed to oscillate in the earth's magnetic field with like poles together, 12 oscillations per minute are made but for unlike poles together only 4 oscillations per minute are executed. The ratio of their magnetic moments 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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• When a magnetic substance is heated, then it

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