Question

The resistance of copper ______.

Options

• increases with temperature

• decreases with temperature

• remains constant with rise in temperature

• first increases then decreases

Answer 1

The resistance of copper increases with temperature. 

Explanation:

In metals like copper, the resistance rises as temperature rises because atoms vibrate more and obstruct electrons. Decreasing is the behaviour of semiconductors and carbon, so it is wrong. Constant resistance is not true for copper, so it is wrong. First increasing then decreasing is not the behaviour of copper, so it is wrong.