PHY 2049 Midterm: University of Florida PHY 2049 exam3sol
Document Summary
Exam 3 solution: the current i increases in the loop labeled in the gure. What is the direction of the induced current in the smaller inner loop and the loop at the right? (list the direction of the induced current for the smaller loop rst. ) Solution: the magnetic eld due to the current i is going out of the page inside the loop and into the page outside the loop. Since the current is increasing, the ux going out of the page increases for the small loop, and the ux into the page increases for the right loop. Solution: in this problem the ux through the square loop is decreasing because the area inside the loop where there is a magnetic eld is decreasing. The rate of change of the area is da/dt = (2cm)(3m/s) = 0. 06m2/s, and the rate of change in ux is d b/dt = bda/dt = 0. 3v .
