A changing magnetic field induces a circulating current in a wire loop, as established by Faraday's law of electromagnetic induction. However, a straight wire that is not part of a closed loop does not experience induced current, as there is no enclosed magnetic flux. When measuring the electromotive force (emf) at the ends of a straight wire, a loop is effectively created, allowing for the possibility of induced emf and current depending on the circuit configuration.
PREREQUISITESPhysics students, electrical engineers, and anyone interested in the principles of electromagnetic induction and its applications in electrical circuits.
That's a subtle question. If you mean a short straight wire that's not connected to anything, then the answer is no because an emf is induced proportional to the change in enclosed magnetic flux and there's no loop here. But as soon as you try to measure the emf at the wire ends, you create a loop and now you can induce an emf and, depending on the circuit, could have a current.micke_s said:A changing magnetic field induces a circulating current in a wire loop.
My question is: Does the changing magnetic field also induce a current in a straight wire?