For magnetism to induce an electric current in a wire, the wire must be part of a closed circuit. This is because a closed circuit allows the induced electric current to flow continuously. According to Faraday's law of electromagnetic induction, a change in the magnetic field within a closed loop (or circuit) can induce an electromotive force (EMF) that drives current through the circuit. If the circuit is open, the current cannot flow despite the presence of an induced EMF.
What must be true in order for magnetism to induce an electric current in a wire?
There needs to be a switch in the circuit.
There cannot be a switch in the circuit.
The wire must be part of a closed circuit.
The wire must be part of an open circuit.
1 answer