_________ wire is used in an electric bulb.
It’s usually tungsten, although carbon or carbonized fibers (bamboo or hair) was occasionally used in older bulbs.
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.