I was reviewing a homework problem I completed for class, but I saw different explanation that contradict each other.
My teacher says that this position for the waves is optimal for maximum induced current since it is perpendicular to the changing magnetic field as the field is moving right, having all of the induced voltage is from the magnetic field only.
But the book solutions say that since the loop is not moving through the magnetic field, it is unable to induce a current in the conductor. Since the loop is at rest, the magnetic field will not induce any current. So, it is up to the electric field to induce the voltage such that being parallel to the electric field will induce the current.
Which is right? Are both of them correct depending on the wave? Is there a situation where a combination of the two would produce the maximum current? Is this really the best way to place the waves?