magnetism

Related Questions

• For protecting a sensitive equipment from the external magnetic field, it should be

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• The angle of dip at the magnetic equator is

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• A bar magnet of magnetic moment $10^4 J/T$ is free to rotate in a horizontal plane. The work done in rotating the magnet slowly from a direction parallel to a horizontal magnetic field of $4\times 10^{–5} T$ to a direction 60° from the field will be

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• A bar magnet of magnetic moment $3.0 A-m^2$ is placed in a uniform magnetic induction field of $2 \times 10^{–5} T$. If each pole of the magnet experiences a force of $6 \times 10^{–4} N$, the length of the magnet is

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• A bar magnet is held perpendicular to a uniform magnetic field. If the couple acting on the magnet is to be halved by rotating it, then the angle by which it is to be rotated is

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