Physics-Resistance & Resistivity
NEET Physics Resistance & Resistivity MCQ Question
Type: MCQ-fact-Easy-Class 12
What is the relationship between resistance (R), resistivity (ρ), length (l), and cross-sectional area (A) of a conductor?
A
R = ρl/A
B
R = ρA/l
C
R = l/ρA
D
R = ρl^2/A
Correct Answer
Option A
Detailed Explanation
The relationship between resistance, resistivity, length, and cross-sectional area is given by the formula R = ρl/A, where ρ is the resistivity of the material.
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