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MHT CET 2024 (10 May, Shift 1) · Pure R, L and C Circuits

Pure R, L and C Circuits question from MHT CET 2024 (10 May, Shift 1)

Q25MHT CET 2024 · 10 MAY · SHIFT 1Easy

Pure R, L and C Circuits

The inductive reactance of a coil is ' RR ' Ω\Omega. If inductance of a coil is tripled and frequency of a.c supply is also tripled, then new inductive reactance will be

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Answer: (d)

  1. XL=2πfL∝fLX_L = 2\pi fL \propto fL
  2. XL′=2π(3f)(3L)=9XL=9RX_L' = 2\pi(3f)(3L) = 9X_L = 9R
  3. So the answer is (d) 9R9R.
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