Figure P21.37 shows a top view of a mutual inductor (compare with Fig. 21.19). The two coils

Question:

Figure P21.37 shows a top view of a mutual inductor (compare with Fig. 21.19). The two coils are shown in different colors, and the top and bottom wire leads are also indicated.
(a) If the current in coil 1 is directed as shown and I₁ is increasing, what is the sign of the induced emf V₂ in coil 2? (V₂= V_A V_B)
(b) Both coils have length ,l = 12 cm (perpendicular to the plane of the figure) and diameter 1.5 mm. Coil 1 has 300 turns, and coil 2 has 3000 turns. If ΔI/Δt = 3.0 A/s, what is the magnitude of V₂?

Top view Bottom Bottom VA V2 VB Top Top Figure P21.37