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A certain LR circuit with a battery has an inductor with L = 65 mH &...

A certain LR circuit with a battery has an inductor with L = 65 mH & τ = 6 ms. It is known that when t = 4.5 ms, I = 0.09 A. Determine the resistance of the resistor and the voltage of the battery.
R = Ω
Vo =

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