Electromagnet Motors Generators

What do you call a device that converts mechanical movement into electricity?

• electric field

• electric motor

• electric generator

• electric plasma

What can you do to make electromagnets stronger?

• Increase number of coils of wire.

• Increase number of batteries used.

• Both A and B.

• Neither A nor B.

In large generators in power plants, ___________ rotate inside a coil of wire to produce an electric current.

• Wind

• Water

• Magnets

• Circuits

How are electromagnets different from magnets?

• magnets can be turned on/off

• you can turn an electromagnet on/off

• magnets are more powerful

• magnets have a North and South pole

true or false- motors and generators are opposites

• true

• false

what did Hans Orsted discover

• wires

• a magnetic field

• a magnetic field that could create wires

• that a current in a wire could create a magnetic field

Which best describes how a motor works?

• When a fan blows on a wire, it causes it to spin, creating a force.

• When a fan blows on a wire, it causes it to spin, creating an electrical current.

• When a wire that carries electrical current is placed in zero gravity, the wire experiences a force.

• When a wire that carries electrical current is placed in a magnetic field, the wire experiences a force.

electric generators converts mechanical force into

• mechanical energy

• magmatism

• electric current

• electric energy

How do you increase the strength of an electromagnet?

• add more magnets

• larger core

• increase the number of coils around the core

• salt water

Which of the following statements is true about electricity?

• Electricity is the flow of negatively charged particles called electrons.

• Electricity is the flow of negatively charged particles called protons.

• Electricity is the flow of negatively charged particles called neutrons.

• Electricity is the flow of neutrally charged particles called neutrons.