I'm new here and also new to electrical engineering so no fancy stuff yet, still tinkering with basic components such as resistor, led, caps and batteries. I think I caught up with the bad side of conventional + and - so I'd like to impose a few question.
I was reading this book "All New Electronics Self-Teaching Guide, 3rd Ed" by Kybett and Boysen to remembers bits what I've learnt so far. On Ch 2 about diode, I stumbled on the idea of the voltage drop in diode. In a series of resistors, it's pretty straight forward, it's a ratio of resistors' value, higher value drops more voltage, etc.
But when a diode is introduced after the resistors, you have to decrease the source voltage with the voltage drop of the diode first before you can measure the new voltage drop of each resistor. Why is this happening? Is it pretty bizarre to count backward first as the current move from + to -.
Also I've seen several examples where a resistor is introduced before anode, which I think is logical and introduced after cathode which is plenty weird as resistor is used to limit the current going into the led but in actual reality, both do just fine(I tried both ways). Is this because of positive charge and negative charge? Because P-N junction, holes and p stuff?
Update (request by Anindo) : Here is the page of the book in googlebook
Previous pages explaining in simple series are gone. For full book you can see it on page 47 (or 71/450, ch 2 starts at 59/450) here (Please edit this, if it's against the law)