A circuit consists of a coil that has a self-inductance equal to 4.80 mH and an internal resistance equal to 13.0 Ω, an ideal 15.0 V battery, and an open switch--all associated in series. At t = 0 the switch is closed. Discover the time when the rate at which energy is dissipated in the coil equals the rate at which magnetic energy is stored in the coil.