Questions
The intensity of magnetic field is H and moment of magnet is M. The maximum potential energy is
a
μ0MH
b
2μ0MH
c
3μ0MH
d
4μ0MH
detailed solution
Correct option is A
Potential energy, U=-MB cos θ⇒Umax=Mμ0H(at θ=180o)Talk to our academic expert!
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A magnetising field of 2 x 103 amp/m produces a magnetic flux density of 8 tesla in an iron rod. The relative permeability of the rod will be
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