magnetism from electricity
electricity from magnetism
magnets and magnetism
chapter review
grab bag
100
the interaction between electricity and magnetism.
What is electromagnetism
100
device that converts mechanical energy into electrical energy.
What is an electric generator?
100
exists in the region around a magnet in which magnet forces can act.
What is a magnetic field?
100
an atom
tiny particles that make up matter?
100
it is used to detect the presence and magnitude of electric charge on a body.
What is an electroscope used for?
200
solenoid and the electromagnet.
What is 2 devices that make electromagnetism useful?
200
process of creating a current in a circuit by changing a magnetic field.
What is electromagnetic induction?
200
when the domains of a magnet are not lined up.
describe the ways a magnet can lose its magnetic properties.
200
A conductor through which electricity enters or leaves an object
What is the electrode?
200
the symbol is I.
What is the symbol for current in an equation?
300
coil of wire with an electric current in it.
What is a solenoid?
300
because electric current changes direction.
why is the current in a generator an alternating current?
300
magnet made by an electric current.
What are electromagnets?
300
it depends on electric field and the electric charge.
What is the size of an electric force depends on which two things?
300
it is a device for stopping the flow of current in an electric circuit as a safety measure.
What is a circuit breaker?
400
increase the # of loops per meter in a solenoid.
how can you make an electromagnet stronger?
400
increases or decreases voltage.
what does a transformer do?
400
because of the materials atoms.
why are copper and aluminum not magnetic?
400
Electrical current is the rate of charge flow
What is the rate at which charges pass a given point?
400
by heat or being placed in a solenoid which has an alternating current being passed through it can cause this.
What can demagnetize a magnet?
500
the relationship between electricity an magnetism.
what did Hans Christian Oersted discover?
500
voltage must be decreases again before the current is used.two step down transformers are used before the electric current reaches your house.
explain the process of getting electrical energy from the power plant to your home.
500
you end up with 2 magnets.
What happens when you cut a magnet in half?
500
An electric current that reverses its direction many times a second at regular intervals.
What is an alternating current?
500
iron core is needed to create this.
What is needed to turn a solenoid into an electromagnet?
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