The motion of a conducting rod through a magnetic field creates a motional EMF, ε. If the rod accelerates to twice the speed, what will the motional EMF be? A) ε B) 2ε C) ε/2 D) 4ε E) ε²

Question

Quizplus · Accepted Answer

Motional EMF is directly proportional to the speed of the conductor moving through the magnetic field. Therefore, if the speed of the rod is doubled, the motional EMF will also double, resulting in an EMF of 2ε.

The Motion of a Conducting Rod Through a Magnetic Field