This question already has an answer here:
- Decoupling caps, PCB layout 9 answers
I know I am wrong, this question is just to understand logically why, I am not an engineer but an hobbist
While designing a pcb for a mcu I should put a decoupling capacitor near each power lines. We do it because the current draw of the ic could change and the capacitor will supply it immediately
Until here i hope we all agree
but why can't i put this cap only near the Vcc?
I heard that the answer could be: "Because the electrons moves from - to +" but i don't think that this is correct logic, because this could bring me to make the board in the opposite situation: the cap near gnd and a very long track until vcc
I hope that i m not going to "shock" anyone with this dumb question, please it is just a curiosity