Question

Which of these statements about resistance is true?
A. Resistance is a material-independent property.
B. The resistance of metals increases with temperature.
C. The resistance increases as the current decreases.
D. The resistance of an insulator is less than that of a conductor.

Answer 1

Answer:

The answer is C. The resistance increases as the current decreases.

Explanation:

The resistivity of conductors, semiconductors, and insulators depend on temperature. The resistivity of good conductors increases with an increase in temperature. They have a positive temperature coefficient. At high temperatures, atoms in good conductors like copper vibrate more rapidly and electrons make more collisions, making the resistivity higher.

Answer 2

Answer: The answer is B

Explanation:

I got the answer right