Q19: A toroid having a rectangular cross section (a = cm by b = cm) and inner radius R = cm consists of N =turns of wire that carry a sinusoidal current I = I max sin vt, with I max = A and a frequency f = v/2p Hz. A coil that consists of N9 = turns of wire is wrapped around one section of the toroid as shown in Figure P31.19. Determine the emf induced in the coil as a function of time.
pi =
g =