JEE Physics · Hard

Electrostatics: Electric Field Lines MCQ

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

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Electric Field LinesHardQuestion 31474

Question

Number of field lines emerging from a charge q is proportional to:
  1. A
    q
    Correct
  2. B
  3. C
    √q
  4. D
    q/ε₀

Correct answer

q

Explanation

By Gauss's law, total flux = q/ε₀ ∝ q. In a field line diagram convention, number of lines ∝ q.