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Physical Science - Electromagnetism - Ch. 21 - Prentice Hall - Science Explorer

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