Focusing on the left circle at times between t=D and t=n: 1?. What is area of the circle? (m2) 18. At what time{s) is the induced emf zero? (5} 19. At what time{s) is the magnitude of the induced emf at its maximum value? [s] 2D. What is the magnitude of the induced emf at its maximum value? (V) 21. Suppose the loop has a resistance of R, what is the induced current in the loop? 22. What is the magnitude of the induced current when the induced emf takes its maximum value provided that the loop has a resistance of R: SUEJ? (A)