A circular loop of wire is rotated at constant angular speed about its symmetry axis, whose direction can be varied, in a uniform magnetic field pointing vertically upward. To get a maximum induced emf, the loop's axis of rotation should A) make an angle of 30^o with the vertical. B) make an angle of 45^o with the vertical. C) make an angle of 60^o with the vertical. D) be vertical. E) be horizontal.

Question

Quizplus · Accepted Answer

The induced emf in a rotating loop is maximum when the plane of the loop rotates perpendicular to the magnetic field lines. This condition is met when the loop's axis of rotation is horizontal, making the plane of the loop perpendicular to the vertical magnetic field.

A Circular Loop of Wire Is Rotated at Constant Angular