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Question 20203
JEE Physics · Medium

Electromagnetic Induction and Alternating Current: Choke Coil MCQ

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Choke CoilMediumQuestion 20203

Question

A choke coil is preferred over a resistor to limit AC current in a circuit because:
  1. A
    It has higher resistance
  2. B
    It dissipates no (or very little) power and saves energy
    Correct
  3. C
    It blocks DC only
  4. D
    It increases impedance without increasing frequency

Correct answer

It dissipates no (or very little) power and saves energy

Explanation

A choke (inductor) has high inductive reactance X_L = ωL that limits AC current without dissipating power (since power factor ≈ 0 for pure inductor). A resistor would dissipate energy as heat.

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