A rigid circular loop has a radius of 0.20 m and is in the x-y plane. A clockwise current…
Physics · JEE Advanced · NTA Exams — Magnetic Effects of Current and Magnetism
A rigid circular loop has a radius of 0.20 m and is in the x-y plane. A clockwise current I is carried by the loop, as shown. The magnitude of the magnetic moment of the loop is 0.75 A-m2. A uniform external magnetic field, B = 0.20 T in the positive x-direction, is present
In figure, an external torque changes the orientation of loop from one of lowest potential energy to one of highest potential energy. The work done by the external torque is closest to
- 0.5 J
- 0.2 J
- 0.3 J
- 0.4 J
Answer
(C) 0.3 J
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