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A short bar magnet of magnetic moment 0.4 JT⁻¹ is placed in a uniform magnetic field of 0.16 T. The magnet is in stable equlibrium when the potential energy is
Options
(a) -0.064 J
(b) zero
(c) -0.082 J
(d) 0.064 J
Correct Answer:
-0.064 J
Explanation:
For stable equilibrium
U = -MB
= – (0.4)(0.16)
= – 0.064 J
Related Questions: - For a thermocouple, the neutral temperature is 270⁰C when its cold junction is at 20⁰C.
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Topics: Magnetic Effects of Current and Magnetism
(167)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- For a thermocouple, the neutral temperature is 270⁰C when its cold junction is at 20⁰C.
- Amout of heat required to raise the temperature of a body through 1 K is called its
- Ionization potential of hydrogen atom is 13.6 eV. Hydrogen atoms in the ground state
- The earth is assumed to be a sphere of radius R. A platform is arranged at a height R
- A capacitor is used to store 24 watt hour of energy at 1200 volt.
Topics: Magnetic Effects of Current and Magnetism (167)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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