A wire of uniform area of cross-section 'A' and length 'L' is cut into two equal parts. The resistivity of each part is?
Correct answer: C. Remains the same
- A. Doubled
- B. Half
- C. Remains the same
- D. Increase three times
Explanation
Resistivity is the property of the material in the wire that depends on the chemical composition of the material but not on the amount of material or the shape (length, cross-sectional area) of the material. Hence, resistivity "remains the same" while the resistance changes based on the length and cross-section of the wire.
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