Multiple choice

Which materials consist of a number of free electrons?

  1. Conductors

  2. Insulators

  3. Thermal insulator

  4. Dielectric

  5. Wire enamel
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In an atom the free electrons are present at the outermost orbit. It can easily flow from one atom to another by applying voltage. So it is called a conductor.

Keep practicing — related questions