Which one among the following statements regarding the electrical resistivity of a conducting wire is <strong>CORRECT</strong>?
- A. The resistivity of the conductor increases if the length of the wire is increased.
- B. The resistivity of the conductor decreases if the length of the wire is increased.
- C. The resistivity of the conductor remains the same if the length of the wire is changed. ✓
- D. The resistivity of the conductor increases if the cross-sectional area of the wire is increased.
Correct Answer: C. The resistivity of the conductor remains the same if the length of the wire is changed.
Explanation
Electrical resistivity is an intrinsic property of the material and its temperature. It does not change with the physical dimensions (length or cross-sectional area) of the wire, unlike resistance.
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