If you stretch a copper wire so that it is thinner, the resistance between its ends
A)decreases.
B)remains unchanged.
C)increases.

Question

Quizplus · Accepted Answer

When you stretch a copper wire so that it is thinner, the resistance between its ends increases. This is because the cross-sectional area of the wire decreases and resistance is inversely proportional to the cross-sectional area. As the area decreases, the resistance increases.

If You Stretch a Copper Wire So That It Is