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A bar magnet of moment P is aligned para...

A bar magnet of moment P is aligned parallel to the direction of a uniform magnetic field B. what is the potential energy of the magnet? What amount of work is required to be done to align the magnet
opposite to the direction of B

Answer

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Knowledge Check

  • A magnet of magnetic moment 2J/T is alligned in the direction of magnetic field of 0.1T what is the net work done to bring the magnet normal to the magnetic field?

    A
    0.1J
    B
    0.2J
    C
    1J
    D
    2J
  • Radiations bend. in opposite direction in magnetic field are

    A
    `alpha` and `beta-` radiations
    B
    `alpha` and `gamma-` radiations
    C
    `gamma` and `beta-` radiations
    D
    all radiations
  • A magnet of magnetic moment 50hatiA-m^2 is placed along the x axis in a magnetic field B=(0.5hati+3.0hatj) T the torque acting on the magnet is

    A
    `175hatk`N-m
    B
    `150hatkN-m`
    C
    `75hatkN-m`
    D
    `25sqrt37hatkN-m`
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