Why is plastic used instead of metal for making electric switch
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Metal is a good conductor of electricity.Of switches were made up of metal itself,as soon as they're switched on,even they would become a part of the circuit and henceforth won't be able to switch it off without a dry wooden stick or so...
Switches have casing of plastic but have metals to do switching actions on internal side.
Switches have casing of plastic but have metals to do switching actions on internal side.
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