In the usual case, the meter applies a known voltage and measures the current which, by Ohm’s law ... difference between a 2-wire and 4-wire measurement on a small resistor.

What’s the resistance (ideally) of a wire? Zero ohms. And thus the zero-ohm resistor was born. We have a whole spool of them in our closet in 1206, the largest SMD size that we use, in order to ...