How is a magnetic field produced? When electrons move through a circuit. When an electromagnetic field interacts with a magnet. When an object has an electric charge. When a current runs through a conductor.

A magnetic field is produced when electrons move through a conductor, creating a current. As the electrons move, they generate a magnetic field around the conductor. This phenomenon is known as electromagnetism. When a current runs through a conductor, it creates a magnetic field that can attract or repel other magnetic materials. This is the basis for how electromagnets and electric motors work.