Physics-Resistance & Resistivity
NEET Physics Resistance & Resistivity MCQ Question
Type: MCQ-conceptual-Easy-Class 12
Which of the following statements about resistance and resistivity is correct?
A
Resistance is directly proportional to the length of a conductor and inversely proportional to its cross-sectional area.
B
Resistance increases with temperature for all materials regardless of their type.
C
Resistivity is a property that does not depend on temperature or material type.
D
All materials have the same resistivity irrespective of their physical state.
Correct Answer
Option A
Detailed Explanation
According to the NCERT context, resistance is affected by the length and area of the conductor, as described in the formula R = ρl/A, where ρ is resistivity. Option A accurately reflects this relationship.
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