Nowadays electricity supplies one of our main sources of heat. Today Gerd Sommerhoff explains the electric current and shows how it may be used to give heat and light.
for Schools
(to 10.25)
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Nowadays electricity supplies one of our main sources of heat. Today Gerd Sommerhoff explains the electric current and shows how it may be used to give heat and light.
for Schools
(to 10.25)
