CBSE 2025 · Region 2 · Set 3 · Q19 · 1 mark
Assertion (A) : The bending of a wire in the form of a coil of several turns does not affect its electrical resistance.
Reason (R) : The electrical resistance of a wire is directly proportional to its electrical resistivity.
Official answer
From CBSE’s own marking scheme for this paper.
(C)
Assertion (A) is true, but Reason (R) is false.
ElectricityFactors on which Resistance DependsUnderstandassertion_reasonmedium
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CBSE Class 10 Science past-paper question from the 2025board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.