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NEET 1988 (AIPMT) · Current Loop as a Magnetic Dipole

Current Loop as a Magnetic Dipole question from NEET 1988 (AIPMT)

Q86NEET 1988 · AIPMTEasy

Current Loop as a Magnetic Dipole

A current carrying coil is subjected to a uniform magnetic field. The coil will orient so that its plane becomes

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Answer: (d)

  1. Torque τ⃗=m⃗×B⃗\vec\tau = \vec m \times \vec B turns m⃗\vec m towards B⃗\vec B. Stable equilibrium is m⃗∥B⃗\vec m \parallel \vec B.
  2. m⃗\vec m is normal to the coil, so the coil's plane becomes perpendicular to B⃗\vec B.
  3. So the answer is (d).
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