Electronics > Beginners
How to measure voltage drop through resistor with oscilloscope?
rstofer:
--- Quote from: Chriss on February 23, 2020, 10:32:30 am ---Ok, I think I sorted out everything thanks to you guys.
I hope I did my homework correct. :)
--- End quote ---
Lab experiments never match the paper version, reality gets in the way. Resistances that weren't considered are the topic of this experiment. You have come a long way with this simple project.
Most important take-away: Ohm's Law is a LAW, not a suggestion. You can't treat it like a speed limit. There are situations at the edge of electronics where it might not hold but for everyday work, it's a LAW. If current flow causes a voltage drop, there is resistance hiding around somewhere.
I would shorten up the time per division so I could see more of the exponential rise in capacitor voltage. If necessary, I would move the trigger position over to the left. In fact, I would move it very close to the left edge; there is nothing interesting before t=0 (the start of the rising edge).
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