JEE Physics · Medium

Capacitance: Surface Charge Density MCQ

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

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Surface Charge DensityMediumQuestion 31510

Question

If surface charge density on capacitor plates is σ, the electric field between the plates in vacuum is:
  1. A
    σ/ε₀
    Correct
  2. B
    σ/2ε₀
  3. C
    2σ/ε₀
  4. D
    σε₀

Correct answer

σ/ε₀

Explanation

Each plate gives σ/2ε₀; combined field between plates is σ/ε₀. Fields add inside and cancel outside.