Question 49
ElectronicsWhich of the following can conduct electricity owing to the presence of free mobile electrons?
- A.Germanium
- B.Silicon
- C.Grapefruit
- D.Copper
Show the answer and explanation
Answer: D (Copper)
Explanation
Copper is a metal with many free electrons, so it conducts readily. Germanium and silicon have very few free electrons at room temperature.