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Question 31439
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Electrostatics: Gauss's Law Application MCQ

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Gauss's Law ApplicationHardQuestion 31439

Question

Two concentric shells (radii R₁ < R₂) carry charges Q₁ and Q₂. Field at R₁ < r < R₂:
  1. A
    k(Q₁+Q₂)/r²
  2. B
    kQ₁/r²
    Correct
  3. C
    kQ₂/r²
  4. D
    Zero

Correct answer

kQ₁/r²

Explanation

Gauss's law: enclosed charge at R₁ < r < R₂ is Q₁ only (inner shell). E = kQ₁/r².

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