Current through the circuit is given by
V = 12 V
Consider an L-R circuit as shown in the figure.
The battery provides 12.0 V of voltage has resistance R=150Ω. The switch is initially open as shown. At time t=0, the switch is closed. At time t after t=0 the current I(t) flows through the circuit as indicated in the figure.
What is the current I(3τ) at a time after t=0 equal to three times the time constant?
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