A copper wire from a large spool is cut into two lengths to make extension cords, one 50 feet long and the other 75 feet long. Which of the following is true?
A) The shorter cord will dissipate more power.
B) The shorter cord will have a smaller voltage.
C) The longer cord will be able to carry more current.
D) The longer cord will have more resistance.

Question

Quizplus · Accepted Answer

The longer cord will have more resistance because resistance is directly proportional to the length of the wire. Therefore, more resistance means less current can flow through the wire, which also means less power is dissipated. The voltage will be the same for both cords because they are both connected to the same power source.

A Copper Wire from a Large Spool Is Cut into Two