1.     The average voltage across an inductor over a complete switching cycle in the    steady state is zero.

2. The average current through a capacitor over a complete switching cycle in the steady state is zero.

3. Voltage across a capacitor is a continuous function. (Capacitors do not make discontinuous voltage changes.)

4. Current through an inductor is a continuous function. (Inductors do not make discontinuous current changes.)

5. Energy balance is always true.