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JEE Physics · Medium

Current Electricity: Resistivity MCQ

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ResistivityMediumQuestion 31607

Question

Resistivity of a material depends on:
  1. A
    Length of wire
  2. B
    Cross-section of wire
  3. C
    Temperature and material composition
    Correct
  4. D
    Applied voltage

Correct answer

Temperature and material composition

Explanation

Resistivity ρ is an intrinsic property of the material, not the wire dimensions. It changes with temperature: ρ = ρ₀(1 + αΔT).

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