In a series RL circuit like Fig. 27.23a, E0 = 45 V, R = 3.3 ,and L = 2.1 H. If the

Chapter 27, Problem 55

(choose chapter or problem)

In a series RL circuit like Fig. 27.23a, E0 = 45 V, R = 3.3 ,and L = 2.1 H. If the current is 9.5 A, how long has the switchbeen closed?

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