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G5 Ch6 L5.2 Magnetism: Electricity and Levitatio ...
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How fast can maglev trains go?
400km/h. (310mph).
How do electromagnetic poles need to be arranged in order to levitate a bar magnet?
Alternating north/south.
How is magnetic levitation similar to and different from buoyancy?
Similar: upward force; different: cause of force/direction
What is magnetic levitation?
The lifting of an object by use of magnetic forces.
What are the similarities and differences between electric motors and generators?
Wow, you really know your stuff! / Sorry, we were looking for...
What do we call electric currents that rapidly change direction?
Alternating current.
What happens when a loop moves past the pole of a magnet?
The direction of the magnetic force changes.
How does a generator create an electric current?
Energy turns the axle, the coil moves through the magnetic field, creating electric current, wires attached to the loop allow process to repeat.
What does a generator consist of?
A coil of wire and a magnetic field (created by a magnet).
What is a generator?
A device that generates electric current by spinning an electric coil between the poles of a magnet.


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