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NEET 2022 (Phase 2) · Pure R, L and C Circuits

Pure R, L and C Circuits question from NEET 2022 (Phase 2)

Q45NEET 2022 · PHASE 2Easy

Pure R, L and C Circuits

An inductor of inductance 2 mH is connected to a 220 V, 50 Hz ac source. Let the inductive reactance in the circuit is X1. If a 220 V dc source replace the ac source in the circuit, then the inductive reactance in the circuit is X2. X1 and X2 respectively are:

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Answer: (d)

  1. X1=2πfL=2π×50×2×10−3=0.628 ΩX_1 = 2\pi fL = 2\pi \times 50 \times 2\times10^{-3} = 0.628\ \Omega
  2. For d.c., f=0f = 0, so X2=0X_2 = 0.
  3. So the answer is (d) 0.628 Ω0.628\ \Omega, zero.
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