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A strip of copper and another of silicon are cooled from room
Question

A strip of copper and another of silicon are cooled from room temperature to 32 K. Which of the following is true regarding this?

A
Resistance of copper strip decreases because it has positive temperature coefficient of resistance.

B
Resistance of copper strip increases because it has negative temperature coefficient of resistance.

C
Resistance of silicon strip decreases because it has negative temperature coefficient of resistance.

D
Resistance of silicon strip increases because it has positive temperature coefficient of resistance.

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Question Text
A strip of copper and another of silicon are cooled from room temperature to 32 K. Which of the following is true regarding this?