To generate electricity we use dynamo, which is an example of a?

To generate electricity we use dynamo, which is an example of Faraday's electromagnetic Induction. 

A tool that transforms mechanical energy into electric energy is an electric generator. It also goes by the name "dynamo."The Electromagnetic Induction Principle governs how an electric generator operates.

According to faraday's electromagnetic induction principle, electromotive force – EMF or voltage – is generated in a current-carrying conductor that cuts a uniform magnetic field. This can either be achieved by rotating a conducting coil in a static magnetic field or rotating the magnetic field containing the stationary conductor