/diy/ - Do It Yourself

>>1282344

Don't forget, voltage is generally measured in parallel and current is measured in series.

So that 19 µA does not represent what is measured across the resistor.

An ideal current measuring device is 0 Ω (dead short) and an ideal voltage measuring device is ∞ Ω.

In reality, though, many instruments that measure voltage are 1 M Ω (for example). In case you try and build it and take some actual numbers.

Also, you don't necessarily know what the “current thing” is exactly... it could be a measurement or it could be a constant current “source” but whatever it is, there is 19 µA going through there.