Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NEET2022PhysicsAlternating CurrentActual

An inductor of inductance 2 mH is connected to a 220 ~V , 50 ~Hz a.c. source. Let inductive reactance in the circuit is X₁ . If a 220 ~V d.c. source replaces the a.c. source in the circuit, then the inductive reactance in the circuit is X ₂ X ₁ and X ₂ respectively are:

Options

  1. A6.28 , zero
  2. B6.28 , infinity
  3. C0.628 , zero
  4. D0.628 , infinity

Correct answer

C. 0.628 , zero

Step-by-step solution

For AC circuits, aligned X_ L & = L X _ L & =2 n ~L X _ L & =0.628 Hence, & X ₁=0.628 aligned ( =2 n) For DC circuits, =0 aligned X_ L & = L X _ L & =0 X ₂ & =0 aligned Hence X₂=0

Practice Alternating Current on Quantrex Academy →

More from Alternating Current

A step down transformer connected to an a.c. mains of 220 V is made to operate at 5.5 V, 44 W lamp. The current in the primary circuit is (Ignore power losses) 2026Which phasor diagram represents LCR circuit at resonance? 2026For an R-L series circuit, the power factor is 3 2 , for R-L frequency f Hz. If the frequency doubles, the new power factor will be 2026In an AC circuit, the current is I = 100 (5t) A. The value of I_ rms is 2026The ratio of power factor of purely resistive circuit to purely reactive circuit is ( 0^ = 1 and 90^ = 0 ) 2026In an LCR series circuit, at resonance, 2026In an AC circuit, E and I are given by E = 150 (150t) V and I = 150 (150t + 3 ) A. The power dissipated in the circuit is (60)^ = 1/2 2026A series LCR circuit is connected across a source E of e.m.f. E=15 (50 t- 3 ) . The current from the supply is I=5 (50 t+ 6 ) . The impedance of the circuit and the phase differenc 2026 Full Alternating Current list All NEET PYQs