Which one of the following statements is correct with regard to the material of electrical insulators ?
They contain no electrons
Electrons do not flow easily through them
They are crystals
They have more number of electrons than the protons on their surface
Answer is Right!
Answer is Wrong!
This question was previously asked in
UPSC NDA-1 – 2017
Electrical insulators are materials characterized by their high resistance to the flow of electric current. This property arises because the electrons in these materials are tightly bound to the atoms and are not free to move readily under the influence of an electric field.