Question asked by Filo student

a uniform magnetic field. It experiences a torque of $0.063\mathrm{J}$. (1) Calculate the magnitude of the magnetic field. (ii) In which orientation will the bar magnet be in stable equilibrium in the magnetic field?

1. (Ans. $0.14\mathrm{T},\vec{m}\Vert \vec{B}$ for stable equilibrium)
2. 2. Calculate the magnitude of the torque required to hold a bar magnet of magnetic moment $200{\mathrm{Am}}^2$ along a direction making an angle of $30^{\circ }$ with the direction of a uniform magnetic field of $0.36\mathrm{G}$.
3. (Ans, $3.6\times 10-\mathrm{Nm}$ )
4. 3. The magnetic dipole moment of the earth is $6.4\times 10^{21}{\mathrm{Am}}^2$. If we consider it to be due to a current loop wound round the magnetic equator of the earth, then what

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Updated on: Jul 6, 2022