| A | B |
|---|
| neutrons | no charge |
| protons | positive charge |
| electrons | negative charge |
| Coulmb's law | the electrostatic interaction between electrically charged particles. |
| magnetism | force of all attraction |
| magnetic fields | exsist whenever electrical charges are moving |
| torque | moving charges are in a wire that loops |
| electrical potential energy | the potential energy in systems with electric fields that change with time |
| potential difference | the change in electrical potential energy |
| transformer | device that changes the potential difference of electricity |
| voltage | a measure of the electrical energy available |
| another name for voltage | potential difference |
| voltmeter | device that measures the potential difference between 2 points in an electric current |
| current | electricity moving through a cicuit |
| ampere | unit used to measure electrical current |
| ammeter | device that measures current going thru any specific point on the circuit |
| resistor | lowers voltage in a cicuit |
| series circuit | all resistors in a row- current travels thru all |
| parallel circuit | resistors are side by side and at the same votage |
| power = | voltage x current |
| power is expressed as | watts |
| watts= | volts x amperes |
