Any body explain me how inductor and capacitor behave in transient analysis when t=0,t>0. And why? Means how capacitor and inductor open circuit and short short circuit and when?
In this case DC means "after a long time".
Suddenly connecting a DC source (like a battery) is not true mathematical DC. After a "long time" it's DC, when it's entirely constant. That's when the capacitors are fully charged (open circuit, no more current) and the inductors carry the maximum current they can (short circuit, no more voltage).