If the maximum couple acting on magnet in a field of induction $0.2 T$ is $10 N m$ , its magnetic moment is

5 A m^{2}

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50 A m^{2}

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4 A m^{2}

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40 A m^{2}

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Solution

The correct option is B $50 A m^{2}$
$B = 0.2 T$
$z = 10 N m$
Couple is $m a x^{m}$ if $0 = π / 2$
$θ =$ Angle of field of induction and
magnetic work of the magnet.
$\to z = \to m \to B$
$z_{m a x} = m B$
$10 = m \times 0.2$
$m = 50 A m^{2}$

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If the maximum couple acting on magnet in a field of induction 0.2T is 10 Nm, its magnetic moment is

The correct option is B 50 Am2B=0.2Tz=10NmCouple is maxm if 0=π/2θ=Angle of field of induction andmagnetic work of the magnet.→z=→m→Bzmax=mB10=m×0.2m=50Am2

If the maximum couple acting on magnet in a field of induction $0.2 T$ is $10 N m$ , its magnetic moment is

The correct option is B $50 A m^{2}$
$B = 0.2 T$
$z = 10 N m$
Couple is $m a x^{m}$ if $0 = π / 2$
$θ =$ Angle of field of induction and
magnetic work of the magnet.
$\to z = \to m \to B$
$z_{m a x} = m B$
$10 = m \times 0.2$
$m = 50 A m^{2}$