Copper is a conductor but plastic coating is an insulator
Thus, copper is a conductor and plastic is an insulator
Hence the given statement is true.
Give scientific reasons.
(a) The copper wire used in an electro-magnet is insulated.
(b) In an electric bell, the electric current stops again and again.
(c) Electrical switches are made of plastic.
(d) The fuse wire is made of a good conductor.