Release That Witch
Cheng Yan travels through time, only to end up becoming an honorable prince in the Middle Ages of Europe. Yet this world was not quite as simple as he thought. Witches with magical powers abound, and fearsome wars between churches and kingdoms rage throughout the land. Roland, a prince regarded as hopeless by his own father and assigned to the worst fief, spends his time developing a poor and backward town into a strong and modern city, while fighting against his siblings for the throne and absolute control over the kingdom. Join Roland as he befriends and allies with witches and, through fighting and even farming, pushes back invaders from the realm of evil.
Alchemy and Chemistry
Editor: Meh
Roland had known from his childhood experience back in the modern world, that DC generators were simple machines working on simple principles. He had disassembled a dozen of motors from his four-wheel-drive toy cars, including both ordinary whiteboard motors and legendarily high-performance Jinchaoba motors, and he had wound rotor copper wires by hand... All of them had been typical DC motors.
Based on his knowledge, DC motors had the same structure as DC generators, and they were basically the same thing. A DC motor, added a mechanism for driving its motor rotor, could double as a DC generator. The rotor, namely the conductor, constantly rotating inside a magnetic field and cutting the magnetic lines, would cause electric current to flow.