Would powerful permanent magnets interfere with electrical goods?
Yes, the flow of electrons will increase. This is because the magnet has a powerful magnetic field and when the wire passes through it, voltage is generated. This is due to electromagnetic induction, when a conductor (i.e. the wire) passes through a magnetic field, voltage is generated. Since there is extra voltage generated, more current will be pushed through the wire and so the flow of electrons in the wire will increase.