A toroid having a rectangular cross section (a = 2.00 cm by b = 3.00 cm) and inner radius R = 4.00 cm consists of N = 500 turns of wire that carry a sinusoidal current I = Imax sin ωt, with Imax = 50.0 A and a frequency f = ω/2π = 60.0 Hz. A coil that consists of N′ = 20 turns of wire is wrapped around one section of the toroid as shown in Figure P30.9. Determine the emf induced in the coil as a function of time.
Figure P30.9
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