Abattery, an inductor, a resistor, and a switch are wired in series. the battery produces an emf of 12.0 v and the inductor is rated at 25.0 mh. what size resistor should be used to yield 65% of the maximum current through the inductor when the switch has been closed for 0.35 s?
Answers: 1
= maximum value of the current 
= value of the current after time "t = 0.35 s" = 0.65 
 = resistance of the resistor = ?
 = Inductance of the inductor = 25 mH = 0.025 H 
= Time constant of the circuit
sec 
ohm
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