1. Consider the above idealized RLC closed circuit with a resistor (R), inductor (L), and capacitor (C). Let

UR(t) be the voltage across the resistor at time t;

ir(t) be the current through the resistor at time t;

VL (t) be the voltage across the inductor at time t;

iz(t) be the current through the inductor at time t;

vc (t) be the voltage across the capacitor at time t;

ic (t) be the current through the capacitor at time t.