Assertion : Current is passed through a metallic wire, heating it red. Half of its portion is cooled by cold water jacket, then rest of the half portion become more hot. Reason: Resistances decreases due to decrease in temperature and so current through wire increases.A. If both assertion and reason are true and reason is the correct explantion of assertion.B. If both assertion and reason are true and reason is not the correct explantion of assertion.C. If assertion is false but reason is trueD. If assertion is true but reason is false.

Assertion : Current is passed through a metallic wire, heating it red.

1.	Assertion : Current is passed through a metallic wire, heating it red. Half of its portion is cooled by cold water jacket, then rest of the half portion become more hot. Reason: Resistances decreases due to decrease in temperature and so current through wire increases.A. If both assertion and reason are true and reason is the correct explantion of assertion.B. If both assertion and reason are true and reason is not the correct explantion of assertion.C. If assertion is false but reason is trueD. If assertion is true but reason is false.
Answer» Correct Answer - A When half the portion of the wire is cooled, its resistance decreases due to decrease in temperature. As a result of this total resistance of circuit decrease, so current through each portion of wire increases. That is, rest of the half portion becomes more hot.

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