1.

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.

Answer»

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.



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