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Question 31531
JEE Physics · Medium

Capacitance: Energy Density MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

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Energy DensityMediumQuestion 31531

Question

Energy stored per unit volume in an electric field E in vacuum is:
  1. A
    ε₀E²
  2. B
    ½ε₀E²
    Correct
  3. C
    E²/ε₀
  4. D
    2ε₀E²

Correct answer

½ε₀E²

Explanation

Energy density u = ½ε₀E². Integrate over volume to get total field energy.

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