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MHT CET 2025 (22 Apr, Shift 2) · Current Loop as a Magnetic Dipole

Current Loop as a Magnetic Dipole question from MHT CET 2025 (22 Apr, Shift 2)

Q28MHT CET 2025 · 22 APR · SHIFT 2Medium

Current Loop as a Magnetic Dipole

Two similar wires of equal lengths are bent in the form of a square and a circular loop. They are suspended in a uniform magnetic field and same current is passed through them. Torque experienced by

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Answer: (a)

  1. τ∝A\tau \propto A for the same II, BB and orientation.
  2. Same length LL: circle A=L24πA = \frac{L^2}{4\pi} is greater than square A=L216A = \frac{L^2}{16} (since 4π<164\pi < 16).
  3. So the answer is (a) circular loop is greater.
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