Multiple Choice
As shown below, a square loop of wire of side a moves through a uniform magnetic field of magnitude B perpendicular to the page at constant velocity directed to the right. Judd says that the emf induced in the loop is zero. Roger claims that it has magnitude
B
. Which one, if either, is correct, and why?
A) Judd, because the magnetic flux through the loop is constant.
B) Roger, because the magnetic flux through the loop is constant.
C) Judd, because the magnetic flux through the loop is not constant if .
D) Roger, because the magnetic flux through the loop is not constant if .
E) Roger, because the magnetic flux through the loop is ΦB = 0.
Correct Answer:

Verified
Correct Answer:
Verified
Q6: A rectangular loop (area = 0.15 m<sup>2</sup>)
Q12: A 5-turn square loop (10 cm along
Q12: A 20-cm length of wire is held
Q14: In a region of space where the
Q15: A conducting bar moves as shown near
Q15: A conducting rod (length = 2.0 m)
Q18: A bolt of lightning strikes the ground
Q19: Starting outside the region with the magnetic
Q20: Two bulbs are shown in a circuit
Q37: A conducting rod (length = 80 cm)