Here are the key points from this section:

• Electricity and magnetism are related - add electricity to a coil, you create a magnetic field. Conversely, apply a magnetic field to a coil, you get electricity.
• Electricity is the movement of electrons.
• Current is a measure of the flow of electrons.
• Voltage is a measure of the difference in electrical charge between two points.
• Electrical power is the product of voltage and current, and is the rate at which electricity does work - measured at a point in time.
• Electric energy is the amount of work that can be done by electricity - measured over a period of time.
• 8 out of 10 processes for generating electricity use a generator.
• Cogeneration is a process of burning a single fuel to simultaneously create two forms of energy. Most commonly the two forms of energy are: electricity and steam.

Ok, so now let's take a look at the Generator.