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 Form 4 Physics Mains Electricity online video lessons.

Mains electricity: Introduction

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Answer Text:
-Sources of mains electricity Mains electricity comes from a power station and its current is the alternating current which can either be
stepped up or down by a transformer. A.c is produced when a conductor is rotated in a magnetic field or when a magnetic field is rotated near a conductor.
-This method is known as electromagnetic induction.
-The source of energy for rotating the turbine is the actual source of electrical energy. Most of the electricity in East Africa is generated from water.