NEET Physics Resistance & Resistivity MCQ Question
Which of the following statements about resistance and resistivity is correct?
Resistance is directly proportional to the length of a conductor and inversely proportional to its cross-sectional area.
Resistance increases with temperature for all materials regardless of their type.
Resistivity is a property that does not depend on temperature or material type.
All materials have the same resistivity irrespective of their physical state.
Correct Answer
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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