| A | B |
|---|
| electrostatics | study of charges that are collected and held in one place |
| like charges | repel |
| unlike charges | attract |
| The atom is (charged/uncharged)? | neutral |
| insulators | glass, dry wood, most plastics cloth, and dry air (DO NOT CONDUCT ELECTRICITY) |
| conductor | (DOES CONDUCT ELECTRICITY) metals |
| electroscopes | measure the quantity of a charge |
| Touching a nuetral body with a charged body is called | CHARGING BY CONDUCTION |
| Using charge seperation to charge an object with out touching it is called | CHARGING BY INDUCTION |
| Coulombs law | Magnitude of the force is directly proportional to the product of the two charges in indirectly proportional to the square of the distance or charge seperation |
| Force varies_____________ with distance | inversley squared |
| Force varies ____________ with charges | directly |
| Coulomb | Unit of charge = 6.25 EE 18 electrons |
| one electron has a charge of | - 1.6EE-19 C |
| 1 proton has a charge of | 1.6EE-19 C |
| 1.6EE-19 C | elementary charge |
| Conservation of charge | electric charge can be neither created nor destroyed in a closed isolated system. |
| To charge a body positively | remove electrons |
| To charge a body negatively | add electrons |
| Charges added to an insulator | stay in place |
| Charges added to a conductor | very quickly spread over the surface of the conductor |
| A neutral body when approached by a charged body will experience a | charge sepration, therfore the nuetral body will be attracted to the charged body |
| _______________ oil drop experiment determined the charge on the electron? | Robert A. Millikan |
| Static electricity precipitators | remove charged particles from smokestacks |
| Ground wires that go to a ground pole and (TOUCH EARTH) | funnel excess charge and ground circuitry |
| Ligtning rods | ground lightning strikes (RATHER THAN CONDUCTING THEM THROUGH THE BARN OR A HIGH RISE) |
| For strong electric fields the field lines are _______________? | close together |
| For weak electric fields the field lines are ________________? | far apart |
| Capacitors | store charge |
| Feild lines go ________ with a positive charge? | outward |
| Field lines go __________ with a negative charge? | inward |
