Objective 4−Use the dot convention to write mesh-current equations for mutually coupled co...

Objective 4−Use the dot convention to write mesh-current equations for mutually coupled coils

a) Write a set of mesh-current equations for the circuit in Example 6.6 if the dot on the 4 H inductor is at the right-hand terminal, the reference direction of ig is reversed, and the 60 Ω resistor is increased to 780 Ω.

b) Verify that if there is no energy stored in the circuital t = 0, and if ig = 1.96 − 1.96e-4t A, the solutions to the differential equations derived in (a) of this Assessment Problem are