| A | B |
|---|
| Allows electrons to flow through it easily | conductor |
| closed path through which electrons flow | circuit |
| accumulation of electric charges on an object | static electricity |
| circuit with more than one path | parallel circuit |
| tendency of a material to oppose electron flow | resistance |
| does not allow electricity to move easily through it | insulator |
| electrical potential: how much work a battery can do | voltage |
| Surrounds electric charge and exerts force on other charges | electric field |
| equals the voltage times the current | electrical power |
| flow of electrons through a conductor | electric current |
| circuit with only one path - current flows in one direction | series circuit |
| Current is equal to the voltage difference divided by its resistance | Ohm's law |
| field of magnetic force caused by flow of electrons from the North to the South pole | magnetic field |
| voltage (volts) divided by current (amperes) | resistance (ohms) |
| current (amperes) x resistance (ohms) | voltage (volts) |
| units for current | amperes |
| units of voltage | volts |
| units of resistance | ohms |
| the continuous flow of a charge through a conductor | current |
| the process of connecting a body to Earth to eliminate excess charge | grounding |
| independent paths in a parallel circuit | branches |
| when a wire by-passes a device in a circuit | short-circuit |
| refers to wires because there is no voltage drop across a wire | equal potential surface |
| the voltage at the negative end of a battery | zero |
| melts or breaks to protect against excessive current; must be replaced | fuse |
| protects against too much current; can be reset | circuit breaker |
| where branches join or split | junction |
| where most of the electrons in a circuit come from | wire |
