Q125 / 180 · AIIMS 2019 (26 May) · Physics

Assertion : A capacitor of suitable capacitance can be used in an AC circuit in place of the choke coil. Reason : A capacitor blocks DC and allows AC only.

  • A
    If both assertion and reason are true and reason is the correct explanation of assertion.
  • Correct answer
    B
    If both assertion and reason are true but reason is not the correct explanation of assertion.
  • C
    If assertion is true but reason is false.
  • D
    If both assertion and reason are false.

Solution

We can use a capacitor of suitable capacitance as a choke coil, because average power consumed in an ideal capacitor is zero. Therefore, like a choke coil, a condenser can reduce $\mathrm{AC}$ without power dissipation.

Hence, the correct answer is option: 'B'.

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