magnetism

Related Questions

• Two equal bar magnets are kept as shown in the figure. The direction of resultant magnetic field, indicated by arrow head at the point P is (approximately)

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• The line on the earth's surface joining the points where the field is horizontal is

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• The time period of oscillation of a bar magnet suspended horizontally along the magnetic meridian is T0. If this magnet is replaced by another magnet of the same size and pole strength but with double the mass, the new time period will be

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• A tangent galvanometer has a coil of 25 turns and radius of 15 cm. The horizontal component of the earth’s magnetic field is $3 \times 10^{–5} T$. The current required to produce a deflection of $45^o$ in it, is

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• If a magnet of length 10 cm and pole strength 40 A-m is placed at an angle of $45^o$ in an uniform induction field of intensity $2 \times 10^{–4}T$, the couple acting on it is

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