Multiple choice

The materials that allow electric current to flow are good conductors of electricity. Which of the following materials is/are not a good conductor of electricity?

  1. Metals

  2. Salt solutions

  3. Acid solutions

  4. Vacuum

  5. Alkaline solutions

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This is the correct option as vacuum is not a good conductor of electricity. It does not allow electric current to pass through it.