Question about how "current" turns on devices..... My apologies up front if this seems like a silly question, but I have not been able to find a straight answer. If "current" is the flow of electrons, and electrons are just charges (negative) - what is that they actually do to turn on a device? They don't release energy/photons etc. Is that other electrons are responding to the electromagnetic force that repulses other electrons - is that how they actually turn something on? Thanks in adaance, Eflat.