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MHT CET202313 May 2023Morning ShiftPhysicsAlternating CurrentActual

With increase in frequency of a.c. supply, the impedance of an L - C -R series circuit

Options

  1. Aremains constant.
  2. Bincreases.
  3. Cdecreases.
  4. Ddecreases at first, becomes minimum and then increases.

Correct answer

D. decreases at first, becomes minimum and then increases.

Step-by-step solution

We know X _ L = L and X _ C = 1 C When the frequency increases, X_ L ^ increases and X_c decreases. The impédance of an LCR series circuit decreases at first, becomes minimum and then increases.

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