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what do you meant by coil of an electric current
All the heating appliances like electric iron,electric kettle electric toaster,electric oven,room heaters,water heaters(geysers),etc contain coils of high resistance wire made of nichrome alloy.When these appliances are connected to power supply by insulated copper wires then a large amount of heat is produced in the heating coils,but a negligible heat is produced in the connecting wires of copper.


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