Q167 / 180 · COMEDK 2020 · Physics

The intensity of magnetic field due to an isolated pole of strength $m_{p}$ at a point distant $r$ from it will be

  • A
    $m_{p} / r^{2}$
  • B
    $m_{p} r^{2}$
  • C
    $r^{2} / m_{p}$
  • Correct answer
    D
    none of these

Solution

The intensity of maznetic field due to isolated pole of strength $m_{\mu}$ at a point distance $r$ from it is given as $$ B=\frac{\mu_{0}}{4 \pi}, \frac{m_{p}}{r^{2}} $$ Hence, no option is eorrect.

Hence, the correct answer is option: 'D'.

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