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How to measure voltage drop through resistor with oscilloscope?

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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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