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Question 31580
JEE Physics · Hard

Capacitance: Capacitor Steady State with Inductor MCQ

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Capacitor Steady State with InductorHardQuestion 31580

Question

In a series LC circuit at resonance, once oscillations begin, energy alternates between:
  1. A
    Resistor and capacitor
  2. B
    Magnetic field of L and electric field of C
    Correct
  3. C
    Battery and capacitor
  4. D
    Two resistors

Correct answer

Magnetic field of L and electric field of C

Explanation

Energy sloshes back and forth: maximum electric energy ½CV²_max = maximum magnetic energy ½LI²_max. In ideal LC circuit this continues indefinitely.

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