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NEET2019PhysicsAlternating CurrentActual

In LCR series circuit, source voltage is 120 ~V and voltage across inductor 50 ~V . If voltage drop across resistance is 40 ~V , then determine voltage in capacitor.

Options

  1. A10(5-8 2 ) V
  2. B10(5+8 2 ) V
  3. C20(5+8 2 ) V
  4. D10(5+7 2 ) V

Correct answer

B. 10(5+8 2 ) V

Step-by-step solution

aligned & 120^2=40^2+ (V_C-50 )^2 & V_C=40 8 +50=10(5+8 2 ) V aligned

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