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MHT CET 2025 (25 Apr, Shift 1) · Current Loop as a Magnetic Dipole

Current Loop as a Magnetic Dipole question from MHT CET 2025 (25 Apr, Shift 1)

Q27MHT CET 2025 · 25 APR · SHIFT 1Medium

Current Loop as a Magnetic Dipole

Current II is carried in a wire of length ' LL '. If wire is bent into a circular coil of single turn, the maximum torque in a given magnetic field BB is

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Answer: (b)

  1. Circle: 2πr=L⇒A=πr2=L24π2\pi r = L \Rightarrow A = \pi r^2 = \frac{L^2}{4\pi}.
  2. τmax=IAB=L2IB4π\tau_{max} = IAB = \frac{L^2IB}{4\pi}
  3. So the answer is (b).
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