A magnetic needle suspended parallel to a magnetic field requires 3 J of work to turn it through 60°. The torque needed to maintain the needle in this position will be:

1.  3 J 

2. 3 J

3.  32J

4. 23 J

Subtopic:  Analogy between Electrostatics & Magnetostatics |
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NEET 2023 - Target Batch - Aryan Raj Singh
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A short bar magnet of magnet moment 0.4 JT-1 is placed in a uniform magnetic field of 0.16 T. The magnet is in stable equilibrium when the potential energy is :
1. 0.064 J
2. – 0.064 J
3. Zero
4. – 0.082 J

Subtopic:  Analogy between Electrostatics & Magnetostatics |
To view explanation, please take trial in the course below.
NEET 2023 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2023 - Target Batch - Aryan Raj Singh
Please attempt this question first.
Launched MCQ Practice Books

Prefer Books for Question Practice? Get NEETprep's Unique MCQ Books with Online Audio/Video/Text Solutions via Telegram Bot

NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology