magnetism

Related Questions

• If a hole is made at the centre of a bar magnet, then its magnetic moment will

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• A magnetic needle is made to vibrate in uniform field $H$, then its time period is $T$. If it vibrates in the field of intensity 4H, its time period will be

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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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• At a certain place the angle of dip is 30° and the horizontal component of earth's magnetic field is 0.50 Oersted. The earth's total magnetic field is

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• At a place the earth's horizontal component of magnetic field is $0.36 \times {10^{ - 4}}weber/{m^2}$. If the angle of dip at that place is $60^o$, then the vertical component of earth's field at that place in weber/m2 will be approximately

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