Get premium membership and access revision papers with marking schemes, video lessons and live classes.
Processing. Please wait.

 Form 4 Physics Mains Electricity online video lessons.

Mains electricity: Introduction

 (1m 38s)
278 Views     SHARE

Download as pdf file

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.