It explains how electrons are accelerated by an electron gun and then deflected by a magnetic field created by Helmholtz coils ... the magnetic field, the electric potential, and the radius ...

If the conductor is part of an electric circuit, an induced current ... For example, if a magnet is moved into a coil of wire, the induced magnetic field tends to repel the magnet back out of ...

Slip rings maintain constant contact with the same sides of the coil As one side of the coil moves up through the magnetic field, a potential difference is induced (created) in one direction.

As an electrical current is passed through the coil, this creates a magnetic field, which interacts with the magnet, causes both the coil and cone to move back and forth, and creates sound waves.

A generator is simply a device that converts mechanical energy (itself derived from coal, oil, natural gas, wind, water, nuclear reactions or other sources) into electrical energy. Here ...