TS EAMCET · Physics · Magnetic Effects of Current
A bar magnet of magnetic moment \(2 \mathrm{Am}^2\) lies aligned with the direction of a uniform magnetic field of 0.3 \(\mathrm{T}\). The amount of work required by an external torque to turn the magnet so as to align its magnetic moment normal to the field direction is
- A \(0.15 \mathrm{~J}\)
- B \(0.3 \mathrm{~J}\)
- C \(0.6 \mathrm{~J}\)
- D \(1.2 \mathrm{~J}\)
Answer & Solution
Correct Answer
(C) \(0.6 \mathrm{~J}\)
Step-by-step Solution
Detailed explanation
Work required by an external torque to turn the magnet so as to align its magnetic moment normal to the field direction.…
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