| A | B |
|---|
| alternating current | an electrical current that reverses its direction at repeated intervals |
| ampere | the unit for measuring electrical current |
| battery | a device that uses chemical energy to move electrical charges |
| current | the quantity that refers to the rate of flow of electric charges |
| direct current | electrical current flowing in one direction only |
| electrical conductivity | the ability of a material to carry electricity |
| electrical conductor | a material that easily carries electrical charge |
| electrical insulator | a material that poorly conducts electricity |
| ohm | the unit of measuerment fo electrical resistance |
| resistance | the measure of an object's ability to conduct current |
| semiconductor | material between conductor and insulator in its ability to carry current |
| volt | the measurement unit for voltage |
| voltage | the amount of potential energy that each unit of electrical charge has |
