Charges
Like charges ________, while opposite charges _____.
repel, attract
This type of charging only happens when objects touch.
Conduction (or contact)
If charges are decreased, the force will _____.
decrease
Electric field lines for a positive charge go _____.
outward (or away from the charge)
Insulator
Neutral objects are ALWAYS _____ to another charged object.
attracted
This is when charges will separate within an object due to another charged object being brought near to it.
Polarization
If charges are brought closer together, the force_____.
increases
The closer you are to a charge, the _______ the field lines.
stronger (or larger)
Metals are good conductors because the _____ are more freely able to flow.
electrons
True or False:
Electric charge is not found in neutral objects.
False. Electric charge is in EVERYTHING!
A polarized object is still ________ if there is no ground (exit or entry for electrons)
Neutral
The the force due to the Law of Gravitation is ONLY attractive. But the force due to Coulomb's Law can be ______.
attractive OR repulsive.
If you decrease the magnitude of the charge, you ______ the magnitude of the electric field lines.
decrease
Where does the excess charge on a conductor reside?
On the outer surface of the object
Which has greater magnitude of charge: a proton or an electron?
Neither. They both have the same magnitude charge 1.67x10-19C, just different signs.
It is impossible for an insulator to become charged with this method.
Induction
When doubling the distance, Coulomb's law decreases by ________
4
In and electric field diagram, more field lines means what?
True or False:
ONLY conductors can polarize.
FALSE: insulators can polarize too, but only within the atomic structure itself. (like a pill)
Millikan's Oil drop experiment determined these two things:
1. Charge of an electron
2. Mass of an electron
Conductive objects can become charged through induction if the electrons can enter or leave through a
ground
This law has a property that is commonly referred to as the ____
inverse square law
Electric field lines NEVER _____.
________ can only hold charge on the surface through contact.
Insulators