Hi, i've been struggling to find the answer to this questions, which are probably simple ones. Does it matter what order a resistor and LED ( or any component ) are in. For example: Vcc -----resistor------Led------gnd or Vcc ------led-------resistor------gnd Are they the same? If so why? I don't quite get how electrons know what is coming next after hitting the first resistor for example in a voltage divider. Second ones: Let's assume that an ( a led or an led? EEE LEEE DEE ??? ) led has a forward voltage drop of 3v, and a voltage supply at 9v. No matter what resistor do i choose, the forward voltage drop on the led should be the same, but the current should vary right? which in practice isn't close at all... Should i expect in this case: 9v VCC -------- 100kΩ ------- LED (3v) ----- GND to have 3v on the led, 6v on the resistor and very very tiny current such that the led would not possible glow? But if we push 20ma of current through the led with less then 3v. Will the led get bright? Thanks for your time in advance, hope there are not stupid questions.