Which among the following is not used to convert electrical energy into heat energy?

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Room heater

Electric Bell

Electric water heater

Electric iron

answer is C.

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Detailed Solution

Coil or panels in room heaters are used to produce heat. When this coil or panel is electrically heated, it glows and heat is distributed throughout the room.
An electric iron is an instrument that uses electrical energy and converts it into heat energy.
The electric water heater is a device that raises the temperature of the water by converting electrical energy into heat energy.
An electric bell is a device that uses electrical energy and transforms it into sound energy. It does this by first transforming electrical energy into mechanical energy, which is then used to create sound energy.

Hence, the electric bell is an instrument that is not used to convert electrical energy into heat energy.

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