An inductor of 1.70mH is joined in series with a dc battery of negligible internal resistance, a 0.700kΩ resistor, and an open switch.
i) Determine how long after the switch is closed will it take for the current in the circuit to reach half of its greatest value?
ii) Determine how long after the switch is closed will it take for the energy stored in the inductor to reach half of its greatest value?