| A | B |
|---|
| Circuit | A continuous path for the flow of electrons. |
| Electron | A negatively charged particle found in the nucleus of atoms. |
| Battery | A group of connected chemical cells that convert chemical energ into electrical energy to produce an electric current. |
| Negative Electrode | The terminal that conducts electrons into the electrolyte of a chemical cell. |
| Wet Cell | A type of chemical cell that uses a liquid electrolyte. |
| Positive Electrode | The terminal that conducts electrons away from the electrolyte of a chemical cell. |
| Alternating Current | An electric current that reverses direction at regular intervals. |
| Photon | A tiny package of electromagnetic energy. |
| Dry Cell | A type of chemical cell in which the electrolyte is a paste rather than a liquid. |
| Motor | A device for converting electrical energy into mechanical. |
| Resistor | A device placed in an electrical current to cause resistance. |
| Electricity | The energy of negative particles (electrons) flowing in a conductor. |
| Electric Current | The flow of electrons from one place to another. |
| Resistance | The opposition to the flow of current in an electric circuit. |
| Watt | A unit of measure of power, equal to one joule per second. |
| Electric Field | The region of space around an electrically charged object in which the effects of the electric force may be observed. |
| Voltage | A measure of the force that pushes current through a conductor, expressed in volts. |
| Electromagnet | A magnet produced by an electric current flowing through a coil of insulated wire wrapped around a core of steel or iron. |
| Direct Current | An electric current that flows continuously in one direction only. |
| Static Electricity | Potential energy in the form of a stationary electric charge. |
| Magnetic Field | A region of space around a magnet in which magnetic forces are noticeable. |
| Fuse | A safety device containing a strip of metal that melts when too much current passes through a curcuit. |
| Piezoelectric Effect | The production of electric currents by certain crystals when they are squeezed or stretched. |
| Hertz | The basic unit of measure of frequency, equal to one cycle per second. |
| Ampere | The basic unit of measure of electric current, equal to one coulomb of charge passing a given point in one second. |
| Conductor | A material through which electric current flows easily. |
| Current | A flow of electric charge through a conductor. Measured in amperes. |
