Verified Solution • 2025–26 Session moderate

QNEET-2022-Ph-521: NEET 2022 Physics - Class 12 NEET-2022-Ph-521 Solution: An inductor of inductance 2 mH is connected to a 220 V 50 Hz ac …

An inductor of inductance 2 mH is connected to a 220 V 50 Hz ac source. Let the inductive reactance in the circuit is X1X_1. If a 220 V dc source replace the ac source in the circuit then the inductive reactance in the circuit is X2X_2. X1X_1 and X2X_2 respectively are: 0.628Ω0.628\Omega infinity 6.28Ω6.28\Omega zero 6.28Ω6.28\Omega infinity 0.628Ω0.628\Omega zero

Multiple Choice Options

  • A 0.628 Ω\Omega � , infinity
  • B 6.28 Ω\Omega � , zero
  • C 6.28 Ω\Omega � , infinity
  • D 0.628 Ω\Omega � , zero

Step-by-Step Verified Solution

We know, for A.C. source X L = _ L = 2 � f ( L ) = 100 � ( 2 _ 10 _ 3 ) = 0.2 � � = 0.628 � For D.C. source The inductor behaves as a closed circuit offering no resistance at all (at steady state) as _ = 0 (For D.C.) _ X L = 0 �

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