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A circular coil of radius 4 cm having 50...

A circular coil of radius 4 cm having 50 turns carries a current of 2 A . It is placed in a uniform magnetic field of the intensity of `0.1` Weber `m^(-2)` . The work done to rotate the coil from the position by `180^@` from the equilibrium position

A

0.1 J

B

0.2 J

C

0.4 J

D

0.8 J

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A
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Knowledge Check

  • A circular coil of radius 4 cm and of 20 turns carries a current of 3 amperes. It is placed in a magnetic field of intensity of 0.5 weber//m^(2) . The magnetic dipole moment of the coil is

    A
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    B
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    A
    `2.01 xx 10^(-3)T`
    B
    `5.64 xx 10^(-3)T`
    C
    `2.64 xx 10^(-3)T`
    D
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    A
    `0.3 Am^(2)`
    B
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    C
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    D
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