| A | B |
|---|
| ion | a charged atom is called an |
| coulomb | the metric unit of electrical charge |
| coulomb | the total charge of 6.25 billion billion electrons |
| electrically polarized | an atom or molecule with aligned charges |
| volts | the unit for electric potential |
| 1 volt = | 1 joule of energy per coulomb of charge |
| voltage difference | potential difference is known as |
| electric current | the flow of electric charge transporting energy |
| amperes | electric current is measured in |
| 1 coulomb per second | 1 ampere is the same as |
| direct current | DC stands for |
| alternating current | AC stands for |
| direct current | electrically charged particles flowing in one direction only |
| alternating current | electrically charged particles repeatedly reversing direction |
| 60 hertz | the vibration rate for current in the U.S. |
| electrical resistance | the property of a material that resists the flow of charged particles |
| ohms | electrical resistance is measured in |
| Voltage/Resistance | Equation for Current = |
| series circuit | electric circuit where devices are connected one after another |
| they all go out | series circuit - if one goes out |
| the rest remain lit | parrallel circuit - if one goes out |
| parallel circuit | electrical devices connected such that each device operates indepedently |
| current x voltage | Electrical Power = |
| thin wire | Which has the greater resistance thin or thick wires? |
| attract | opposite charges _______ |
| repel | like charges ______ |
| postive | protons have a ____ charge |
| negative | electrons have a ___ charge |
| neutral | neutrons are electrically |
| postively charged | If an atom transfers electrons from itself it becomes |
| The hairs have like charges | Why do the hairs on your head stand up when you are charged by a Van de Graff generator? |
| pressure or push | voltage difference acts like electrical |
| amperes | The rate of electric flow is measured in |
| V/R | I = |
| generator | AC is produced with a |
| battery | DC is produced with a |
| back and forth | Electrons flow ____ in AC |
| in one direction | Electrons flow ___ in DC |
| electroscope | A device that detects a build-up of charge |
| negative | If you bring a negative rod to the electroscope the leaves repel because they are |
| positive | If you rub glass with silk the glass becomes |
| grounding | touching the electroscope with your hand is called |
| static electricity | The build-up of charge in one place is known as |
| Van de Graaf Generator | A device that produces a large static charge is the |
