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Choose the correct statement :...

Choose the correct statement :

A

Alloys of metals usually have greater resistivity than that of their constiuent metals .

B

Alloys usually have much higher temperature coefficient of resistance than pure meatls .

C

The resistivity of alloy manganin increases rapidly with increase of temperature .

D

The resistivity of a typical insulator is greater than that of a metal by a factor ~ `10^(3)`

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The correct Answer is:
A
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