2/28/2017 - Solderless Breadboards, Open-circuits and Short-circuits Lab

On Tuesday, February 28th, 2017, we conducted the Solderless Breadboards, Open-circuits and Short-circuits Lab.

Tools used:
- digital multimeter
- solderless breadboards
- 3 cables for breadboards


First, we connected the cables to the clip-extension of the DMM (alligator clip extension). we then connect the two cables to the same row on the same side of the breadboard like the picture below

we then measure the resistance using the DMM, which for our group turns out to be 2.5 ohm (make sure it is on the lowest setting of the resistance at 200 ohms because the value is quite small)

Second, we move one of the cable to the same row but OPPOSITE side of the breadboard like pictures below.

it turns out the resistance value is really high (open circuit).

Third, we move the cable we just moved to another row (but still opposite side of the bread board), ending up with the setup below

It turns out the resistance value is also really high in this setup (open circuit like previous one).

Fourth, we add a third cable that starts at the same row same side of the first cable and ends up at the same row same side of the second cable to the third setup, like the picture below.

When we measure the resistance, we ended up with a closed circuit with a resistance value of 4.1 ohms.

Summary:
I think the solderless breadboard have closed circuit on holes in the same row same side of the solderless breadboard, and open otherwise. In order to create a closed circuit on the other setup an additional cable is required to connect the two.

-John Linardi