Edison’s light bulb

The American electrical engineer Edison invented the incandescent light bulb in 1879, which changed our everyday life.

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A dynamo converts mechanical energy into direct current.

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Watch this video to find out whether tap water and table salt are able to conduct electricity.


Capacitors store electrical energy in the form of electric charge.

Generating alternating current

Electric current can be generated by rotating an armature loop in a magnetic field.

Alkaline batteries

In alkaline batteries electric current is generated by electrochemical reactions

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