4 Figure 7.10 shows the flux through a loop as a function of time. a Sketch the rate of change of flux through the loop, A Use the same time scale. At b Sketch the induced emf across the loop as a function of time. Use the same time scale. Flux (T m) 0.06 0.04 0.02 0 -0.02 -0.04 -0.06 A 0.2 0.3 0.1 FIGURE 7.10 Flux through a loop as a function of time Time (s) 0.4