Electromagnetism Review

What are the two ways to make an electromagnet stronger?

1) Add more coils of wire 2) Add more power

Insulator

A material that does not allow the flow of electric current

A magnet moving through a coil of wire produces:

Electrical energy

A device that converts mechanical energy into electrical energy:

Generator

The type of field formed when electricity moves in a circuit.

Magnetic field

copper wire

The material that's the most common conductor of electricity

semiconductor

a material that conducts current under certain conditions

Two magnets with opposite poles pointing towards each other (N to S) will repel or attract?

attract

If mechanical energy moves a magnet through a coil of wire, this is an example of a

generator

A device that converts electrical energy into mechanical energy:

motor

A wire is wrapped around a nail. What else do you need to add to make an electromagnet?

power (electricity, a battery, etc.)

Two magnets with the same pole pointing towards each other (S to S) will repel or attract?

repel

In a hydroelectric dam, what supplies the mechanical energy to produce power?

water falling from a higher position to a lower one