$A$ magnet of magnetic moment $50\,\hat{i}\,\text{A}\,\text{m}^2$ is placed along the $x$-axis in a magnetic field $\vec{B} = (0.5\,\hat{i} + 3.0\hat{j})\,\text{T}$. The torque acting on the magnet is:

  • A
    $175\,\hat{k}\,\text{N}\,\text{m}$
  • B
    $150\,\hat{k}\,\text{N}\,\text{m}$
  • C
    $75\,\hat{k}\,\text{N}\,\text{m}$
  • D
    $25\sqrt{37}\,\hat{k}\,\text{N}\,\text{m}$

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