Question

Which of the following statement(s) is/are correct?

• A. Conductors are materials that allow the flow of electric current, whereas dielectric (insulators) do not
• B. The main difference between conductor and dielectric behavior is the amount of available free electrons
• C. Not all conductors have the same level of conductivity, just as not all insulators are resistant to electric current.
• D. Both A and B only

Answer 1

Answer: (A), (B), (C)

The correct options are
A Conductors are materials that allow the flow of electric current, whereas dielectric (insulators) do not
B The main difference between conductor and dielectric behavior is the amount of available free electrons
C Not all conductors have the same level of conductivity, just as not all insulators are resistant to electric current.

Conduction in a material takes place due to presence of free electrons in the material. The presence of these electrons in conduction band, as opposed to valence band in dielectrics, makes the conductors allow a flow of electric current.

On the other hand, the flow of current is resisted in dielectrics.