A current can be generated into a conducting loop if it is exposed to a charging magnetic field. You can alter the strength of the magnetic field, move the conductor in and out of the field, and revamp the distance between a magnet and/or conductor. The strength of the stream will vary in proportion to the change of magnetic flux.
The conduction of the flow can be determined by considering Lenz's law, which states that a produced current in the wire will stream in such a way that the magnetic field it generates around the wire will decrease the applied magnetic field.