the regions of a magnet where the magnetic force exerted by the magnet is strongest
a relation between two opposite attributes or tendencies
physical energy or intensity; push or a pull
a field in a region of space that exerts magnetic forces; a field produced by magnets, by changing electric fields or by moving charges.
a solenoid with a ferromagnetic core.
a device that converts mechanical energy into electrical energy by the relative motion of a coil of wire with respect to a magnetic field.
a device that uses an electromagnet to turn an axle.