A 35.0 V battery with negligible internal resistance, a 50.0Ω resistor, and a 1.25mH inductor with negligible resistance are all connected in series with an open switch. The switch is suddenly closed.
a. - How long after closing the switch will the current through the inductor reach one-half of its maximum value?
b. - How long after closing the switch will the energy stored in the inductor reach one-half of its maximum value?