Question Detail
Question
In the motional EMF example (Page 17-20), where the magnetic field (B) points into the screen and a rectangular loop moves to the right, what is the direction of the induced current according to Lenz's law?
Correct Answer
Option B is the correct answer.
Detailed Explanation
As explained on page 20, as the loop moves to the right, the area with the magnetic field decreases, meaning there is 'less inward flux' through the loop. To oppose this decrease in inward flux, the induced current must create an inward magnetic field. Using the right-hand rule, an inward magnetic field is created by a clockwise current.
Hint
The loop is moving out of the magnetic field, thus the inward flux is decreasing.