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Electricity Study Guide
Insulators do not allow electric current to pass.
**Rubber is an example of an insulator.
Conductors allow electric current to pass.
**Metal and water are examples of conductors.
Metal could be used to complete a gap in a broken circuit.
Circuit is what you call the path for electricity.
If a circuit is broken and does not let current flow, it is called an open circuit.
A series circuit only has one path.
A parallel circuit has more than one path.
A switch is a device that controls whether a circuit is open or closed.
If the switch was opened, the light bulb will go out because the circuit is broken.
Electricity in our homes uses parallel circuits.
Static electricity is when a charge builds up when two items are rubbed together.
Lightning is an example of static electricity in nature.
Electrical Energy can in many forms:
 Mechanical (machine = vacuum)
 Light (light bulb)
 Heat (toaster)
The magnetic field is the space around a magnet where the force of the magnet acts.
An electromagnet is an electric current passing through a wire curled around an iron
core.
Which scientist invented the lightning rod? Benjamin Franklin
Which scientist invented the generator? Michael Faraday