STANDARD Physics Resistivity MCQ Question
Two copper wires of length l and 2l have radii, r and 2r respectively. What is the ratio of their specific resistances?
1 : 2
2 : 1
1 : 1
1 : 3
Correct Answer
Detailed Explanation
The specific resistance is independent of the dimensions of the wire but depends upon the nature of the material of the wire.
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