Electrical Engineering MCQ on Basic Concepts
Conductors are defined as materials that:
- Do not conduct electrical current under normal conditions
- Easily conduct electrical current
- Have electrical conduction properties in between conductors and insulators
- None of above
Correct answer: 2. Easily conduct electrical current
Explanation:
- Conductors are the materials that possess electrical conduction ability
- Metals are good conductors of electricity
- Among conductors, the best ones are single-element materials
- Examples of good conductors include: Copper (Cu), Silver (Ag), Gold (Au), and aluminium (Al)
- Good conductors are characterized by atoms with only one valence electron
- In good electric conductors the valence electrons are very loosely bound to the atom. These loosely bound valence electrons become free electrons.
- In a conductive material the free electrons are valence electrons.
Also see below: Difference between conductors and insulators