| Magnets | Magnets Continued | Electric current | Tranformers | Electricity meets magnetism |
|---|---|---|---|---|
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they attract
what happens if you put two different ends together?
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they repel
what happens if you put two like ends together?
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Free points
Free points
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Output voltage is less than the input voltage
Step down tranformer
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Magnet and compass
What were the materials used in the lab?
|
|
magnet
any object that attracts the metal iron
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magnetic material
any material that is strongly attracted to a magnet
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Turning on a flashlight, batteries in a lightbulb, ect.
What are two examples of a electric current?
|
Step up voltage
Input voltage is less that output voltage
|
current producing wire
What material could we have uused in the lab instead of what we used?
|
|
electromagnet
a magnet created by wrapping a current-carrying wire around a ferromagnetic core
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you put a magnetic material within the magnetic field of a magnetyes
are magnetic materials attracted to temporary magnets?
|
What is a direct current?
Electric current flowing in one direction.
|
Negativly charged particles travel through the wire generating a megnetic field.
Why does a magnet apply a force on an electric current?
|
a magnet next to a compass
What was our lab about?
|
|
ferromagnetic elements
iron, nickel, cobalt
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you put a magnetic material within the magnetic field of a magnet
how do you create a temporary magnet?
|
What is a voltage?
A measure of energy transformed in a circuit.
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Magnets omunted on shafts where the magnet spins.
What do electric motors is?
|
Their is a magnet in the needle of the comass
What causes the compass to be attracted to the magnets?
|
|
stronger: when two magnets are close together
weaker: when two magnets are far apart
when is the magnetic force stronger? weaker?
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any magnetic materials
ex: nails, paper clips, nickels, etc.
what items can become temporary magnets?
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Stream of charged particles, sych as electrons or ions, moving through an electrial conducction.
What is a electric current?
|
Free points
Free points
|
Can be reversed or shut off entirely.
In a electromagnet what can be done to the current?
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