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Unit 3, Lessons 1-4
| Term | Definition |
|---|---|
| Electric Charge | a fundamental property that leads to the electromagnetic interactions among particles that make up matter. |
| Static Electricity | electric charge at rest; generally produced by friction or induction. |
| Electrical Conductor | a material in which charges can move freely. |
| Electrical Insulator | a material in which charges cannot move freely. |
| Semiconductor | an element or compound that conducts electric current better than an insulator does but not as good as a conductor does. |
| Electric current | the rate at which electric charges past a given point. |
| Voltage | the amount of work to move a unit electric charge between two points:expressed in volts. |
| Resistance | the opposition presented to the current by a material or device. |
| Electric circuit | a set of electrical components connected such that they provide one or more complete paths for the movement of the charges. |
| Series Circuit | a circuit in which the parts are joined one after another such that the current in each part is the same. |
| Parallel Circuit | a circuit in which the parts are joined in branches such that the voltage across each part is the same. |
| Magnet | any material that attracts iron or materials containing iron. |
| Magnetic Force | the force of attraction or repulsion generated by moving or spinning electric charges. |
| Magnetic pole | one of two points, such as the ends of a magnet, that have opposing magnetic qualities. |
| Magnetic field | a region where a magnetic force can be detected. |
| Electromagnetism | the interaction between electricity and magnetism. |
| Electromagnet | a coil that has a soft iron core and that acts as a magnet when an electric current is in the coil. |