Question
Download Solution PDFResistivity of a wire depends upon
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFCONCEPT:
The resistance (R) of a conducting wire depends upon the length of wire, cross-sectional of the wire, and its resistivity.
Resistance is directly proportional to the length of the conductor and Inversely proportional to the cross-sectional area.
\(R = ρ \frac{l}{A}\)
Where l is the length of the conductor, a is the cross-sectional area of the conductor, ρ is resistivity.
Resistivity: The resistivity is the resistor depends upon the nature of the conductor and temperature. ∴ Material
Resistivity is the same for given conducting material at a given temperature and does not depend upon dimensions of wire.
If a wire is stretched, its volume remains the same.
Last updated on Mar 26, 2025
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