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Grade 7 Ch N3 Vocab
Pearson Electricity and Magnetism
| Question | Answer |
|---|---|
| solenoid | A coil of wire with a current that acts as a bar magnet |
| electromagnet | A magnet created by wrapping a coil of wire with a current around a ferromagnetic core |
| electrical energy | The energy of moving electrical charges |
| mechanical energy | The energy an object has due to its movement or position |
| galvanometer | A device that uses an electromagnet to detect small amounts of current |
| electromagnetic induction | The process of generating an electric current from the motion of a conductor through a magnetic field |
| direct current | Current consisting of charges that flow in only one direction in a circuit |
| alternating current | Current consisting of charges that move back and forth in a circuit |
| electric generator | A device that transforms mechanical energy into electrical energy |
| transformer | A device that increases or decreases voltage |
| step- up transformer | a transformer that increases voltage |
| step-down transformer | a transformer that decreases voltage |