A coil is stationary in a spatially uniform, external, time-varying magnetic field. The em...

A coil is stationary in a spatially uniform, external, time-varying magnetic field. The emf induced in this coil as a function of time is shown if Fig. 29.43. Sketch a clear qualitative graph of the external magnetic field as a function of time, given that it started from zero. Include the points t1, t2, t3, and t4 on your graph.

Figure 29.43