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The rate of change of torque 'tau' with ...

The rate of change of torque `'tau'` with deflection `theta` is maximum for a magnet suspended freely in a uniform magnetic field of induction `B` when `theta` is equal to

A

`theta = 0^(@)`

B

`theta = 45^(@)`

C

`theta = 60^(@)`

D

`theta = 90^(@)`

Text Solution

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The correct Answer is:
A
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  • Rate of charges of torque tau with deflection theta is maximum for a magnet susended freely in a uniform magnetic field of induction B, when

    A
    `theta=0^(@)`
    B
    `theta=45^(@)`
    C
    `theta=60^(@)`
    D
    `theta=90^(@)`

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    A
    `theta= 0^(@)`
    B
    `theta = 45^(@)`
    C
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    D
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    A
    `overline(P_(m)) xx overline(B)`
    B
    `overline(P_(m)) xx overline(B^(2))`
    C
    `(overline(P_(m)))/(overline(B))`
    D
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