A loop of wire is pushed with constant velocity through a region of uniform magnetic field as shown. (The field points out of the page.) As the loop enters and exits the magnetic field, only one of the vertical segments of wire is within the magnetic field. What is the direction of the induced current within this vertical segment?

upward when both entering and exiting the magnetic field

downward when both entering and exiting the magnetic field

upward when entering the magnetic field and downward when exiting the magnetic field

downward when entering the magnetic field and upward when exiting the magnetic field

zero, because the segment of wire is perpendicular to the magnetic field

Physics C(EM)

College Board

Exam No：AP Physics C(EM) Practice Test Year：2024 Question No：16

Answer:

5.1 Electromagnetism: Electromagnetic Induction (Including Faraday’s Law and Lenz’s Law)