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MHT CET202012 Oct 2020Evening ShiftPhysicsAlternating CurrentActual

The resonant frequency of a series LCR circuit is ' f '. The circuit is now connected to the sinusoidally alternating e.m.f. of frequency ' 2 f ^ . The new reactance X _ L ^ and X _ C ^ are related as

Options

  1. AX _ C ^ = 1 4 X _ L ^
  2. BX _ C ^ =2 X _ L ^
  3. CX _ C ^ = X _ L ^
  4. DX _ C ^ = 1 2 X _ L ^

Correct answer

A. X _ C ^ = 1 4 X _ L ^

Step-by-step solution

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