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  9. Q338

RRB Group D (Level-1 posts) 2022 · Question 338 of 598

A metallic wire having resistivity ρ is cut into four equal parts. The resistivity of each part is:

  1. AρCorrect
  2. B4ρ
  3. Cρ/2
  4. Dρ/4

Answer: A. ρ

Explanation

Resistivity (ρ) is a material property and does not depend on the length or cross- sectional area. Cutting the wire into parts does not change its resistivity; thus, each part has resistivity ρ.

Source: RRB Group D 2022 Prev. Yr. Paper (18 Aug 2022) (Shift 2) - Prepp · reliable-secondary

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