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Magnetism And Matter

Question

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At a certain place, the horizontal component of the earth’s magnetic field is B₀ and the angle of dip is 45°. The total intensity of the field at that place will be
B₀
$\sqrt{2} B_{0}$
2 B₀
B₀²

Solution

B.

\sqrt{2} B_{0}

Some More Questions From Magnetism and Matter Chapter

Answer the following question:
The earth may have even reversed the direction of its field several times during its history of 4 to 5 billion years. How can geologists know about the earth's field in such distant past?

Answer the following question:
The earth’s field departs from its dipole shape substantially at large distances (greater than about 30,000 km). What agencies may be responsible for this distortion?

A bar magnet of magnetic moment 1.5 JT^–1 lies aligned with the direction of a uniform magnetic field of 0.22 T.
(a) What is the amount of work required by an external torque to turn the magnet so as to align its magnetic moment: (i) normal to the field direction, (ii) opposite to the field direction?
(b) What is the torque on the magnet in cases (i) and (ii)?

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