(a) What is the characteristic time constant of a 22.7 mH inductor that has a resistance of 4.20 2? 5.4 ms (b) If it is connected to a 12.0 V battery, what is the current after 12.5 ms? .40 How does the current in an RL circuit behave after it is switched on? What is the maximum current in this case? A Additional Materials O Reading
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