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Concepts Of Physics MCQ Edition [Volume 2]PhysicsAlternating Current

Which of the given plots can represent the reactance of a series LC combination?

Options

  1. Aa
  2. Bb
  3. Cd
  4. Dc

Correct answer

C. d

Step-by-step solution

The inductive reactance is given by X_L = L = 2 f L . The plot of X_L versus frequency f is a straight line passing through the origin, which corresponds to curve a. The capacitive reactance is given by X_C = 1 C = 1 2 f C . The plot of X_C versus frequency f is a rectangular hyperbola, which corresponds to curves b and c. For a series LC combination, the net reactance is the difference between the capacitive and inductive reactances. If we consider the net reactance as X = X_C - X_L = 1 2 f C - 2 f L : - At low fr

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