A series LR circuit contains an emf source of 19 V having no internal resistance, a resistor, a 29 H inductor having no appreciable resistance, and a switch. If the emf across the inductor is 80% of its maximum value 3.0 s after the switch is closed, what is the resistance of the resistor?
A series LR circuit contains an emf source of 19 V having no internal resistance, a resistor, a 29 H inductor having no appreciable resistance, and a switch. If the emf across the inductor is 80% of its maximum value 3.0 s after the switch is closed, what is the resistance of the resistor?
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Transcribed Image Text:A series LR circuit contains an emf source of 19 V having no internal resistance, a resistor, a 29 H inductor having no appreciable resistance, and a switch. If the emf across the inductor is 80% of its
maximum value 3.0 s after the switch is closed, what is the resistance of the resistor?
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