When using protoboards, and connectors on breadboards, how important is the total resistance that you usually get?
I suspect that in most simple projects this resistance is not tested for every wire and pin, so you can't know either the value or importance.
One dupont connector short wire (those sold in breadboard kits) on those small multi-tester boards shows about 0.3 ohms.
If that's true, then just 10 of those is already 3 ohms.
What I want to ask, because every project is different, just how important this effect is, and whether you should always "worry about it" or just not spend much time thinking about it.
I guess PCBs also have a resistance in traces, but it's probably much less since everything is tightly spaced together.
So let's say a few to 10 or 20 ohms or so in total for small projects (could be wrong on that assumption), is it going to cause any effect that you really need to think about and factor in?