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8thScElec&Mag-3-1&2
8th Grade Science Electricity & Magnetism Chapter 3 Sec. 1 & 2
Question | Answer |
---|---|
electromagnetism | relationship between electricity & magnetism |
energy | ability to move an object over a distance |
electrical energy | energy associated with electric current |
galvanometer | device that measures small currents |
electromagnetic induction | generating an electric current from the motion of a conductor through a magnetic field |
direct current | current of charges that flow in one direction |
alternating current | current of charges that move back & forth in a circuit |
electric generator | device that transforms mechanical energy into electrical energy |
step up transformer or step down transformer | a transformer that increases voltage or a transformer that decreases voltage |
solenoid | a coil of wire with a current |
electromagnet | a solenoid with a ferromagnetic core |