Question: A 1 5 mH inductor, a 1 7 . 5 resistor, and a 2 . 5 V battery are connected in series. The switch is

A 15 mH inductor, a 17.5 resistor, and a 2.5 V battery are connected in series. The switch is closed at t =0. Find the voltage drop across the resistor at t =0. Answer in units of V. Correct answer: 0 V. Explanation: The time constant is = L R ,

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