1. Electrostatics
Electrons Sitting Still
Charge
inherent property of matter, one of the 7 fundamental units
only two types of charge, positive & negative
charge of proton & electron are exactly equal, but
oppositely charged
Constants
Electrons and Protons are equal in mass.
2. Rules for looking at Charges
Law of Conservation of Charge
the net electric charge of a system must remain constant
Fundamental Rule: Like
charges repel and unlike
charges attract.
3. 3 ways to charge
1. Friction
charge is transferred due to the
friction of materials in contact. (Since
friction depends on the type of
materials, so does this)
2. Contact When 2 objects touch, e’s
flow from one to the other
3. Induction Charging an object without
actually touching it.
7. Polarization
Special form of induction
One side of an object is induced
to be slightly more positive
(or negative) than the other
side.
+ + + + + + + + + +++
--
- - - - -- -- - -
+ ++ + + + +
+ +
+ +
8. 4 ways to travel
1. Insulator e’s don’t flow easily
2. Semiconductor sometimes conducts,
sometimes insulates
3. Conductors e’s flow easily
4. Super conductors substance that has
no resistance when its temp gets close to
absolute zero.