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The torque acting on a magnetic dipole o...

The torque acting on a magnetic dipole of moment `P_(m)` when placed in a magnetic field is

A

`P_(m)B`

B

`vec(P_(m))xxvec(B)`

C

`vec(P_(m)).vec(B)`

D

`P_(m)//B`

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Knowledge Check

  • The torque acting on a magnetie dipole of moment 5 A m^(2) when placed in an external uniform magnetic induction 1.5 xx 10^(-4)" Wb/m"^(2) at right angle to magnetic induction is

    A
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    B
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    A
    perpendicular to `vecM," parallel to "vec B`
    B
    parallel to `vecM," perpendicular to " vecB`
    C
    perpendicular to both `vecM and vec B`
    D
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  • To double the torque acting on a rectangular coil of n turns, when placed in a magnetic field-

    A
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    B
    Area and current through the coil should be doubled.
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    D
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