Thank you.
What about when R->0?
I looked over this schematic in a power factor correction document I read:
As you can see, the third graph, which belongs to VL, shows that when the circuit gets close - GND-source-L-GND circuit -
the inductor's voltage grows exponentially, and doesnt turn to Vin instantaneously.
Moreover, by theory, the current should have stayed 0A, since there shouldnt have been a change in voltage, execpt at t=0,
but the current increases here.
It is also mentioned in the text:
"When the switch closes, the current (IL) gradually increases through it linearly.
Voltage (VL) across it increases exponentially until it stabilizes at VIN."
How do you explain please the two contradictions:
1. voltage doesnt instantaneously turn from 0V to VIN.
2. current doesnt stay 0A but increases.