gcsescience.com                                       18                                       gcsescience.com


What is a Generator?

A generator is a device that produces electricity.

A simple generator is similar to an electric motor.
With a motor, we put electrical energy in and
get rotational energy out. With a generator we
put rotational energy in and get electrical energy out.

Current induced in a Generator

As with the motor, the current direction changes
with each half turn of the generator.
The generator produces alternating current because
slip rings are used in place of a split - ring commutator.

Slip Rings on a Generator

The slip rings keep a continuous connection
with the wire around the armature (continued).

If a simple electric motor with a split - ring commutator
 is used to generate electricity, you do not get alternating
. A different type of electrical output is produced.

back   Links   Electromagnetism   Induced Current   Revision Questions   next

gcsescience.com         Physics Quiz         Index         Generator Quiz         gcsescience.com

Home      GCSE Chemistry      GCSE Physics

Copyright © 2015 gcsescience.com. All Rights Reserved.