CUET · PHYSICS · PYQ PAPER 2025
A current of 2 A flows through a plane circular coil of radius 3 cm and having 50 turns. The coil has been placed in a uniform magnetic field of 0.6 T. The minimum potential energy of the coil will be
- A 0 J
- B - 0.08 J
- C - 0.17 J
- D 0.17 J
Answer & Solution
Correct Answer
(C) - 0.17 J
Step-by-step Solution
Detailed explanation
\(A = \pi r^2 = \pi (0.03 \, \text{m})^2 = 0.0009\pi \, \text{m}^2\) \(\mu = NIA = 50 \times 2 \, \text{A} \times 0.0009\pi \, \text{m}^2 = 0.09\pi \, \text{A} \cdot \text{m}^2\)…
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