Iron and silicon wires are heated form `30^(@)C` to `50^(@)C`. The correct statement is thatA. Resistance of both wires IncreasesB. Resistance of both wires decreasesC. Resistance of iron wire increases and that of silicon wire decreasesD. Resistance of iron wire decreases and that of silicon wire increases

Iron and silicon wires are heated form `30^(@)C` to `50^(@)C`. The cor

1.	Iron and silicon wires are heated form `30^(@)C` to `50^(@)C`. The correct statement is thatA. Resistance of both wires IncreasesB. Resistance of both wires decreasesC. Resistance of iron wire increases and that of silicon wire decreasesD. Resistance of iron wire decreases and that of silicon wire increases
Answer» Correct Answer - C Temperature coeffiecient of resistance of metals is positive while that of semiconductor is negative

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