Questions
A short bar magnet of magnetic moment is placed in a uniform magnetic field of . The magnet is in stable equilibrium when the potential energy is
detailed solution
Correct option is B
Here magnetic moment M=0.2 JT−1Magnetic field B=0.16 TWhen a bar magnet is placed in a uniform magnetic field, its potential energy U=-M→.B→ U=-MB cosθFor stable equilibrium θ=0U=−MB U=−0.2 JT−1 .(0.16)TU=−0.032 J .Talk to our academic expert!
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A short bar magnet of magnetic moment is placed in a uniform magnetic field of 0.16 T. The magnet is in stable equilibrium when the potential energy is
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