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Magnetism and Electricity
When electric current flows through a wire, a ___________________
forms around the wire.
 Strength of magnetic field depends on
_____________________________________________________________
What are electromagnets?
 Increase strength of the magnetic field by ___________________________
to wire coil or ________________________ passing through the wire.
What is an electric motor?
A device that changes _______________________ into _____________________.
 In a simple electric motor, an electromagnet rotates between the poles of
a permanent magnet.
Direct and Alternating Current
Direct Current (DC):
Alternating Current (AC):
Magnetism and Electricity
When electric current flows through a wire, a ___________________
forms around the wire.
 Strength of magnetic field depends on
_____________________________________________________________
What are electromagnets?
 Increase strength of the magnetic field by ___________________________
to wire coil or ________________________ passing through the wire.
What is an electric motor?
A device that changes _______________________ into _____________________.
 In a simple electric motor, an electromagnet rotates between the poles of
a permanent magnet.
Direct and Alternating Current
Direct Current (DC):
Alternating Current (AC):