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JEE PHYSICS MCQ: SEMI CONDUCTOR DEVICES
1
Medium
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Analyzing
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Statement-I: The temperature coefficient of resistance is positive for metals and negative for semiconductors.
Statement-II: On raising the temperature, in metals drift velocity increases but in semiconductors more charge carriers are released.
Statement-II: On raising the temperature, in metals drift velocity increases but in semiconductors more charge carriers are released.
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Correct option: A
If both statements are correct.
Option A (If both statements are correct) is correct because metals have a positive temperature coefficient and semiconductors have a negative temperature coefficient of resistance.
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