FIGURE 29-10
-A circular loop of wire is rotated at constant angular speed about an axis whose direction can be varied. In a region where a uniform magnetic field points straight down, what must be the orientation of the loop's axis of rotation if the induced emf is to be zero?

Question

FIGURE 29-10 
-A circular loop of wire is rotated at constant angular speed about an axis whose direction can be varied. In a region where a uniform magnetic field points straight down, what must be the orientation of the loop's axis of rotation if the induced emf is to be zero?

Quizplus · Accepted Answer

The induced emf is zero when the plane of the loop is parallel to the magnetic field lines, meaning the axis of rotation must be vertical.

FIGURE 29-10 -A Circular Loop of Wire Is Rotated at Constant Angular