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AP EAMCET Engineering 21 Apr 2019 Shift 1 Paper

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Question : 108

Total: 160

Assertion (A): When a wire of aluminium and another wire of silicon are heated from room temperature to 80 °C. the conductivity of aluminium increases and that of silicon decreases.
Reason (R) : Aluminium has positive temperature coefficient of resistivity and silicon has negative temperature coefficient of resistivity.

Both (A) and (R) are correct and (R) is the correct explanation of (A)
Both (A) and (R) are correct but (R) is not the correct explanation of (A)
(A) is collect but (R) is not correct
(A) is not collect but (R) is correct

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