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A current carrying small loop behaves li...

A current carrying small loop behaves like a small magnet. If `A` be its area and `M` its magnetic moment, the current in the loop will be

A

`M//A`

B

`A//M`

C

`MA`

D

`A^(2)M`

Text Solution

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The correct Answer is:
A
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Knowledge Check

  • The current carrying loop behaves as magnetic dipole because,

    A
    upper face of loop behaves as south pole and lower as north pole.
    B
    lower face of loop behaves as south pole and upper face as north pole.
    C
    one face of loop behaves as south pole and other face as north pole.
    D
    Both faces of loop keep switching between north and south pole respectively.

  • The magnitude of magnetic moment of the current loop in the figure is

    A
    `la^(2)`
    B
    `sqrt(2) la^(2)`
    C
    zero
    D
    none of the above

  • A current carrying loop in a uniform magnetic field will experience

    A
    force only
    B
    torque only
    C
    both torque and force
    D
    neither torque nor force

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    The magnetic dipole moment of current loop is independent of

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