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JEE Advanced2010PhysicsAlternating CurrentActual

You are given many resistances, capacitors and inductors. These are connected to a variable DC voltage source (the first two circuits) or an AC voltage source of 50 ~Hz frequency (the next three circuits) in different ways as shown in Column II. When a current I (steady state for DC or rms for A C ) flows through the circuit, the corresponding voltage V₁ and V₂ (indicated in circuits) are related as shown in Column I

Options

  1. A(A) R,S,T, (B) Q,R,T, (C) P, (D) Q,R,S
  2. B(A) R,S,T, (B) Q,R,S,T, (C) P,Q, (D) Q,R,S,T
  3. C(A) S,T, (B) Q,R,T, (C) P,Q, (D) Q,R,S,T
  4. D(A) S,T, (B) Q,R,S,T, (C) P, (D) Q,R,S

Correct answer

B. (A) R,S,T, (B) Q,R,S,T, (C) P,Q, (D) Q,R,S,T

Step-by-step solution

In circuit (P), I can't be non zero in steady state. In circuit (Q) : V₁=0 and V₂=2 I=V (also) aligned & In circuit (R): V₁=X_L I=(2 f ~L ) I & = (2 50 6 10⁻³ ) I & =1.88 I & V₂=2 I aligned In circuit (S): V₁=X_L I=1.88 I array r V₂=X_C I= ( 1 2 f C ) I = ( 1 2 50 3 10⁻⁶ ) I=(1061) I array In circuit (T): aligned & V₁=I R=(1000) I & V₂=X_C I=(1061) I aligned Therefore the correct options are as under (A) R, S, T (B) Q, R, S, T (C) Q or P, Q (D) Q, R, S, T

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