What happens during electromagnetic induction?

Electromagnetic induction occurs when a changing magnetic field generates an electric current in a conductor. This phenomenon is based on Faraday's Law of Electromagnetic Induction, which states that a change in the magnetic environment of a coil of wire will induce an electromotive force (EMF) in the wire. Essentially, when the strength or direction of the magnetic field around a conductor changes, it creates voltage, leading to the flow of electric current.

This process is fundamental to many electrical technologies, including generators and transformers. The generated current can power electrical devices, making this principle crucial in the generation and distribution of electricity.

In contrast, the other options do not accurately describe what occurs during electromagnetic induction. For instance, while magnetic fields may change, they are not destroyed, as the process involves the creation of new currents rather than the loss of existing ones. Therefore, the portrayal of electromagnetic induction as a means of generating electric current by altering the magnetic field captures the essence of this important electrical principle.