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PS-Electromagnetism
Physical Science - Electromagnetism - Ch. 21 - Prentice Hall - Science Explorer
| Question | Answer |
|---|---|
| electromagnetism | the relationship between electricity and magnetism |
| 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 |
| energy | the ability to do work or cause change |
| electrical energy | the energy of moving electrical charges |
| mechanical energy | kinetic or potential energy associated with the motion or position of an object |
| galvanometer | a device that uses an electromagnet to detect small amounts of current |
| electric motor | a device that transforms electrical energy to mechanical energy |
| 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 converts mechanical energy into electrical energy |
| turbine | a large circular device with many blades - sometimes used to transform mechanical energy into electrical energy |
| transformer | a device that increases or decreases voltage |
| step-up transformer | a tranformer that incereases voltage |
| step-down transformer | a transformer that decresases voltage |
Created by:
mwhite5
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