Very much like an electric stove. Electricity is passed through a resistive coil, which gets hot. The coil is immersed in a tank of water, so the heat is transferred, by conduction, to the water...
Basically a water heater is a big water tank with insulation wrapped around it. cold water will then flow into it and will activate a thermostat. The thermostat will then either kick on an electric...
Electric heaters work because electric current is forced through wires that have a good deal of electrical resistance. When electric current flows through any resistance, it generates heat. Remember...