Single Answer MCQ
Q-00001708
How is the resistance of a conductor affected by its length and cross-sectional area?
1
Resistance is directly proportional to length and inversely proportional to cross-sectional area.
2
Resistance is inversely proportional to length and directly proportional to cross-sectional area.
3
Resistance is directly proportional to both length and cross-sectional area.
4
Resistance is inversely proportional to both length and cross-sectional area.
Answer and Solution
Answer
A. Resistance is directly proportional to length and inversely proportional to cross-sectional area.
Solution:
The resistance of a conductor is directly proportional to its length and inversely proportional to its cross-sectional area. This relationship is described by the formula R = ρ(L/A), where ρ is the resistivity of the material.
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