A circuit consists of a capacitor with capacitance C and
a coil of inductance L connected in series, as well as a switch and a
resistance equal to the critical value for this circuit. With the switch
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disconnected, the capacitor was charged to a voltage Vo, and at the
moment t = 0 the switch was closed. Find the current I in the circuit
as a function of time t. What is /max equal to?