Multiple choice

Which of the following types of materials does not let the current flow under normal condition?

  1. Resistor

  2. Insulator

  3. Conductor

  4. Rheostat

  5. Semiconductor

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

An electrical insulator is a material whose internal electric charges do not flow freely, which does not conduct an electric current under the influence of an electric field. Option 2 is correct.