Say I have this RC circuit and at the start, the switch is off (current going from left to right and the starting point is just above the battery). I understand that then the capacitor acts just like a metal wire as if it isn't there. But when you turn on the switch, then I was taught that the current goes to 0. And since there is no current flowing in the resistor there is no voltage drop in the resistor. My questions are
why when you turn on the circuit, does the current go to 0?
and why does the capacitor suck in all the voltage drop from the resistor?
Also how do charges build on up the capacitor?
In my textbook, the positive charges always build up on the upper plate of the capacitor. why is it so? Is this some kind of a rule?
I generally have no idea how the RC circuit works and why the current suddenly goes to 0 when the switch is on please help!
any help is appreciated.