The brushed DC motor is the oldest electric motor type still in use today. First invented in the 1870s, brushed DC motors rely on two sets of opposing permanent magnets - a rotor and a stator.

A technology pioneered by Benjamin Franklin is being revived to build more efficient electric motors ... practical example, ...

Hybrid cars use two different power sources, typically a gas-powered engine and an electric motor. Hybrid cars use one or both power sources for motivation, often using the electric motor at lower ...