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NEET2015PhysicsAlternating CurrentActual

A series R-C circuit is connected to an alternating voltage source. Consider two situations: a. When capacitor is air filled. b. When capacitor is mica filled. Current through resistor is i and voltage across capacitor is V then:

Options

  1. AV a > V b
  2. Bi a > i b
  3. CV a = V b
  4. DV a < V b

Correct answer

A. V a > V b

Step-by-step solution

​​​​​​​ i = v R 2 + 1 C&omega; 2 V C = v R 2 + 1 C&omega; 2 &times; 1 C&omega; V C = V RC&omega; 2 + 1 If we fill a di-electric material C &uarr; &rArr; V C &darr;

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