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KCET2009PhysicsAlternating Current

A resistor and a capacitor are connected in series with an AC source. If the potential drop across the capacitor is 5 ~V and that across resistor is 12 ~V , then applied voltage is

Options

  1. A13 ~V
  2. B17 ~V
  3. C5 ~V
  4. D12 ~V

Correct answer

A. 13 ~V

Step-by-step solution

Let the applied voltage be V volt. Here, V _ R =12 ~V , ~V _ C =5 ~V aligned V &= V _ R ²+ V _ C ² = (12)²+(5)² &= 144+25 = 169 =13 ~V aligned

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