*77 SSM Two coils connected as shown in Fig. 30-70 separately have inductances L1 and L2. TI mutual inductance is M. (a) Show that this combination can be placed by a single coil of equivalent inductance given by Leg = L1 + L2 + 2M. (b) How could the coils in Fig. 30-70 be reconnected to yield equivalent inductance of Leg = L + L2- 2M? (This problem is an extension of Problem 47, but the requirem that the coils be far apart has been removed.) L1 M- L9 N1 Ng Figure 30-70 Problem 77.

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