Final answer:
Moving a length of copper wire through a magnetic field generates an electric current.
Step-by-step explanation:
Electric current refers to the flow of electric charge in a conductor. It is a fundamental concept in physics and plays a crucial role in the functioning of electrical and electronic devices. Electric current is measured in amperes (A).
Moving a length of copper wire through a magnetic field generates an electric current. When a wire cuts across magnetic field lines, it induces a voltage that causes electric charges to flow, creating a current. This phenomenon is known as electromagnetic induction and is one of the fundamental principles of electricity and magnetism.