In Fig. 30.11, switch is closed while switch is kept open.
Chapter 30, Problem 30.26(choose chapter or problem)
In Fig. 30.11, switch is closed while switch is kept open. The inductance is and the resistance is (a) When the current has reached its final value, the energy stored in the inductor is 0.260 J. What is the emf of the battery? (b) After the current has reached its final value, is opened and is closed. How much time does it take for the energy stored in the inductor to decrease to 0.130 J, half the original value?
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