Wires made of iron and silicon are cooled from 50^{\circ} {\C} to 30^{\circ} {\C}, then

Correct Answer is : resistance of iron decreases and that of silicon increases

resistance of both wires decreases

resistance of both wires increases

resistance of iron increases and that of silicon decreases

resistance of iron decreases and that of silicon increases

COMEDK Exam 2012 Solved Paper

Question : 32 of 180

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Wires made of iron and silicon are cooled from 50∘C to 30∘C, then

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