Question

A complete circuit is left on for several minutes, causing the connecting copper wire to become hot. As the temperature of the wire increases, the electrical resistance of the wire

(a) Decreases
(b) Remains the same
(c) Increases
(d) Increases for some time and then decreases​

Answer 1

The electrical resistance of a wire increases as its temperature increases.

Step-by-step explanation:

The temperature of a wire affects its electrical resistance. As the temperature of the wire increases, the electrical resistance also increases. Therefore, the correct answer is (c) Increases.

When a wire is heated, the metal atoms vibrate more vigorously, which leads to greater collisions with the electrons moving through the wire. This increased collision rate results in a greater resistance to the flow of current.

For example, consider a copper wire in a circuit. If the wire is left on for several minutes, the wire will become hot, and as a result, its electrical resistance will increase.