A circular loop of wire lies in the plane of the page. A uniform magnetic field directed *into* the page increases steadily in magnitude. Which of the following correctly describes the direction of the induced current in the loop?
(a) Clockwise, because this current produces a magnetic field out of the page that opposes the increasing external flux.
(b) No current is induced, since only a change in the orientation—not the magnitude—of the magnetic field would create an emf.
(c) Counterclockwise, because this current produces a magnetic field out of the page that opposes the increase in external flux.
(d) Clockwise, because this current produces a magnetic field into the page that reinforces the increasing external field.