coal
To produce electricity
It uses electricity to produce its sound
To produce electricity
To produce electricity
To produce electricity
Heaters use electricity to produce heat by resistance.
It doesn produce electricity. It uses electricity and shows magnetic properties.
To produce electricity
To produce electricity
To produce electricity
Some heaters use electricity, some use gas, oil, coal, etc.
Candles (of whatever color) are not used to produce electricity, they are used for light, and for ceremonial purposes.