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NEET2005PhysicsAlternating CurrentActual

A 50 ~Hz a.c. source of 20 volts is connected across R and C as shown in figure. The voltage across R is 12 volt. The voltage across C is

Options

  1. A8 ~V
  2. B16 ~V
  3. C10 ~V
  4. Dnot possible to determine unless values of R and C are given.

Correct answer

B. 16 ~V

Step-by-step solution

: v=50 ~Hz , V=20 ~V , V_R=12 ~V In case of R C circuit, V= V_R^2+V_C^2 aligned & (20)^2=(12)^2+ (V_C )^2 & (V_C )^2=400-144=256 V_C=16 ~V aligned

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