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Which of the following statements are wrong w.r.t the specific resistance of wire? This question has multiple correct options

1. It varies with its length
2. It varies with its cross-section
3. It varies with its mass
4. It varies with nature of material

Correct answer: It varies with its length

Solution

Specific resistance (resistivity) is an intrinsic property of a material, so it does not depend on the wire’s length, cross-section, or mass. It depends on the nature of the material (and temperature), so the statement about length is wrong.

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