Question: A 6.0-V battery is connected in series with a 49-mH inductor, a 150- resistor, and an open switch. (a) At what time after the switch

A 6.0-V battery is connected in series with a 49-mH inductor, a 150-Ω resistor, and an open switch. 

(a) At what time after the switch is closed (t = 0) will the current in the circuit be equal to 12 mA? 

(b) How much energy is stored in the inductor when the current reaches its maximum value?

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