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Question 31436
JEE Physics · Hard

Electrostatics: Electric Field MCQ

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

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Electric FieldHardQuestion 31436

Question

Electric field E and displacement D in a dielectric medium (relative permittivity ε_r) relate as:
  1. A
    D = ε₀E
  2. B
    D = ε₀ε_rE
    Correct
  3. C
    D = E/ε₀
  4. D
    D = E/ε_r

Correct answer

D = ε₀ε_rE

Explanation

D = ε₀ε_rE = εE where ε is absolute permittivity. D (displacement vector) accounts for free charges; polarization P accounts for bound charges.

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