A | B |
Magnetism | properties and interactions of magnets |
Magnetic Poles | Where the magnetic force is the strongest. |
Magnetic Domain | Groups of atoms with aligned magnetic poles all pointing the same direction. |
Electromagnet | Temporary magnet-place iron inside a current carrying coil of wire. |
Galvanometer | Devices that use an electromagnet to measure electric current. |
Electric Motors | Changes electrical energy into mechanical energy. Ex: Fan |
Electromagnetic induction | producing an electrical current by moving a loop of wire through a magnetic field |
Electromagnetic induction 2 | Moving a magnet through a wire loop |
Generator | produces electricity by rotating a coil of wire in a magnetic field. |
Turbine | A large wheel that rotates when pushed by water, wind or steam. |
Direct Current (DC) | flows in only one direction. Ex: battery |
Alternating Current (AC) | reverses the direction of the current flolw in the normal way. Ex: outlets |
Transformer | increases or decreases voltage of an alternating current |