Electricity
This is the unit of current.
What are Amps or Amperes.
The current in a household plug is this type of current.
What is AC or Alternating Current?
A closed pathway that an electrical current flows
Circuit
What would happen if the north ends of two magnets were close together?
What is repel?
An electromagnetic force causes oppositely charged electrons to attract to each other
True or False
What is False?
(Electrons are always negatively charged!)
True or False: Like charges attract and unlike charges repel.
What is False? Like charges repel and unlike charges attract.
A measure of how much a material opposes the flow of electric current and changes electric current into heat energy.
What is resistance?
What type of circuit is this: It allows the flow of electricity to pass through multiple paths throughout a circuit.
Parallel Circuit
If a south end of a magnet is close to a north end of a magnet, the magnets will _________.
What is attract?
This temporary magnet is formed when an electric current flows through a wire coiled around certain metal cores.
What is an electromagnet?
If you rub your hair on a balloon and the balloon becomes negatively charged, what charge will your hair have?
What is a positive charge?
A material that allows an electric current to pass easily through it is called
What is a conductor?
A material that does not allow electricity to flow
Insulator
The strongest part of a magnet
poles
True or False: A refrigerator magnet is a permanent magnet.
What is True? Even when you take it off the refrigerator, it is still magnetic.
A build up of electric charge on an object or surface.
static electricity
Voltage can also be called
potential difference
In Ohm's law V=IR, what does the I stand for?
current
True or False: All magnets have a north and south pole.
What is True?
A machine that uses an electromagnet to change electrical energy into mechanical energy.
electric motor
the alteration of charge because a negatively charged object was brought close, but not touching, to another object
induction
This can decrease the resistance of a wire
-thicker, shorter, lower temp
A _________ contains a piece of metal that melts and breaks when it gets hot.
What is a Fuse?
What is the area around the magnet where the force of the magnet can act called?
What is a magnetic field?
What type of transformer is found outside your house?
Step-down transformer