What happens when the north pole is oriented at 90 degrees?

When the north pole is oriented at 90 degrees, the magnetic force is maximized at the conductor. This is because, in such an orientation, the magnetic field lines produced by the magnet are perpendicular to the conductor, allowing for the most effective interaction. This condition typically leads to the maximum induced electromotive force (emf) in the conductor due to the principle of magnetic induction, which states that a change in magnetic flux through a circuit induces an electromotive force. Thus, while the conductor is in this position, the magnetic effect is significant, demonstrating a direct relationship between the orientation of the magnet and the magnetic field experienced by the conductor.

Other options describe conditions that either minimize or negate the interaction with the conductor. For instance, if no magnetic force reached the conductor, there would be no induction taking place, which is not the case with the north pole set at this angle. Similarly, while some magnetic force reaching the conductor indicates a lesser interaction, at 90 degrees, the maximum effect is achieved. The notion that the magnetic force is reversed is also not applicable when discussing the orientation of the north pole in this context; the orientation affects how the field interacts rather than reversing the field itself.