question_answer

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.