Question

A copper wire is stretched so that its length increases and its diameter decreases. As a result, the resistance of the wire will?

1) increase
2) decrease
3) remain the same
4) cannot be determined

Answer 1

When a copper wire is stretched so that its length increases and its diameter decreases, the resistance of the wire will increase.

Step-by-step explanation:

If a copper wire is stretched so that its length increases and its diameter decreases, the resistance of the wire will increase. The resistance of a wire is directly proportional to its length and inversely proportional to its cross-sectional area. When the length of the wire increases, the resistance also increases. Additionally, when the diameter of the wire decreases, the cross-sectional area decreases, leading to a higher resistance.