This is essentially the heart of the electric combi boiler. A resistive electrical element heats the water. When electric current flows through the element, it heats up, and transfers this heat to the water circulating around it.
seen from United States
seen from United Kingdom
seen from United States

seen from United States
seen from Switzerland
seen from United States
seen from United States
seen from Syria

seen from United States

seen from United Kingdom

seen from United States
seen from Canada

seen from United States

seen from United States
seen from Syria
seen from Germany
seen from Türkiye
seen from China
seen from China
seen from Germany
This is essentially the heart of the electric combi boiler. A resistive electrical element heats the water. When electric current flows through the element, it heats up, and transfers this heat to the water circulating around it.