Final answer:
In a closed circuit consisting of only a resistor that's near a magnet, an emf can be induced due to a changing magnetic flux, causing a current to flow through the resistor.
Step-by-step explanation:
In the situation described, a closed circuit consisting of only a resistor that's in the vicinity of a magnet, an emf (electromotive force) can be induced in the circuit due to a changing magnetic flux, according to Faraday's law of electromagnetic induction. When the magnetic flux enclosed by the circuit changes, an emf is induced, causing a current to flow through the resistor. The magnitude and direction of the induced emf and current depends on the rate at which the magnetic flux changes, the strength of the magnetic field, and the resistance of the resistor.