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bailey last unit physics test
Terms in this set (15)
in good electrical _______ electrons move easily. In a good _______ the electrons do not move easily
coulombs law states as the distance between two charges increases the force between them __________
in a magnetized substance, the _____
domain or electron spins
two ways to charge an object by friction:
dragging feet, rub ballon on sweater
two charged particles are held close together and then released , exerting a positive force on each other. the charges must be moving ______ each other and the signs are the same. If the force was negative, the charges would be moving _______ each other and the signs would be ________
apart, towards, opposite
The 3 ways to charge an object are _____, ______, & _______.
friction, induction, and conduction
when using a Van de Graaf generator, there are two different ways for a person to be "charged". The person touching the generator is being charged by ________. Another person who reaches out toward the first and stops about an inch away is charged by _________.
what happens if you break a bar magnet in half?
2 smaller magnets are formed, each with a north and south pole.
which magnetic pole is the geographic north pole of the earth?
a magnetic field is created around a wire when ______.
current is running through it.
what three things can be done to increase the strength of an electromagnetic
add coils, cadd current, add magnetic (iron), core
Electromagnetic induction can be achieved in what 2 ways?
move a magnet close to a solenoid (coiled wire), or move a wire next to a magnet.
the coil of wire used with electromagnetic induction is called ________.
with electromagnetic induction, the induced current can be increased by increasing the number of _____ or increasing the strength of the _____.
moving charged particles creates an ______ field and also a _________ field.
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