Electromagnetic induction can create a voltage by movement of a conductor in a magnetic field. This voltage can make current flow, and the effect is used in electricity generation and microphones.

This video is about the invention of the electricity generator. Electromagnetic induction can create a potential difference. This potential difference causes a current, and the effect is used in ...

American researchers have measured a tiny electrical voltage by exploiting Earth's magnetic field in the planet's rotational motion. This discovery, though modest, revives a scientific debate ...