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Electricity and Magnetism
Terms in this set (25)
What is a photon?
A packet of light
Charging by conduction?
Charging an object by allowing it to come into contact with an object that already has an electrical charge- has the same charge
Charging by induction?
Charging an object without direct contact between the object and a charge- opposite charges
What is an insulator?
Keeps electrons from going through it
What is a conductor?
Electrons flow freely
What does the voltage tell you?
How hard the electrons are being pushed
If you rub a balloon on your shirt, the balloon becomes ________ charged and your shirt becomes ____________ charged.
A magnet had how many poles?
What are the 2 poles a magnet has?
North and south
What poles together are repulsive on a magnet?
South/South and north/north
What poles together are attractive on a magnet?
If you cut a magnet in half, how many poles would you have?
What are the poles you'd have if you cut a magnet in half?
North/South and north/south
If the charge of a magnet is increased by 4, the force of the magnet what?
Increases by 4
If the distance between 2 magnets is increased by 4, the force of the magnet is what?
Decreased by 16
If a circuit has a low current, what is the way to get a lot of never from it?
What is a safe setup for a circuit if a child were playing with it?
Low volts and low current
Which wire has more resistance? Thick or thin...
Which wire has more resistance? Long or short...
The conventional current is incorrect... which way does it flow?
Positive to negative
The parallel circuit (correct way) flows which way?
Negative to positive
What type of circuit would you choose if you have 3 lights wired to it? Why?
Parallel, so they turn on individually
What must the atoms in an object do in order to become magnetized?
Must be aligned in order
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