I've got two questions for you.
Electric current is the flow of electrons across a conductor.Why has it always got to do with electrons and not with protons? (I know neutrons are not eligible for electricity as they carry no charge.)
Sometimes my computer starts properly after I disconnect all the cables and press and hold the power button for a few seconds and then re-connect all the cables (same thing with my modem). What's going on? I've heard that some amount of left over current get's drained. But where do they go? How did that excess current get accumulated in the first place?