| A | B |
|---|
| alternating current | an electric current that reverses its direction at repeated intervals; the abbreviation for this is AC |
| direct current | electrical current flowing in one direction only; the abbreviation is DC |
| electrical insulator | material that poorly conducts current |
| semiconductor | material between conductor and insulator in its ability to carry current |
| ampere | the unit for measuring electrical current; the abbreviation is amp. |
| electrical conductivity | the ability of a material to conduct (or carry) electricity. |
| ohm | the unit of measurement for electrical resistance; the abbreviation is ? . |
| volt | the measurement unit for voltage. |
| battery | a device that uses chemical energy to move electrical charges |
| electrical conductor | a material that easily carries electrical current. |
| resistance | the measure of an object’s ability to conduct current. |
| voltage | the amount of potential energy that each unit of electrical charge has |
| current | the quantity that refers to the rate of flow of electric charges; current is measured in amps. |
