Pieces of copper and germanium are cooled from room temperature to 80K. What will be the effect on their resistance?

Explanation

To analyze the effect of cooling copper and germanium from room temperature to 80K on their resistance, we can follow these steps:

### Step 1: Understand the Nature of Materials
Copper is a metal, while germanium is a semiconductor (metalloid). Metals typically have a high density of free electrons, while semiconductors have fewer free electrons.

**Hint:** Remember that metals and semiconductors behave differently under temperature changes due to their electron configurations.

### Step 2: Effect of Temperature on Metals
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