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Electrical Circuit and Self Inductance? With a battery emf of 13.6 V in the RL circuit...

Electrical Circuit and Self Inductance?

Electrical Circuit and Self Inductance? Wi

With a battery emf of 13.6 V in the RL circuit ( R=0.710 ? and L= 78.0 mH), what is the self-induced emf when the switch has just been closed on a?

What is the self-induced emf after two L/R time constants have passed?

In units of the time constant, after how much time will the self-induced emf be just one-half of the battery emf?

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Answer #1

The current in a RL circuit is defined like

then auto EMF is

when

when

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