Resistors and Breadboards 2/2

In class we learned about resistors and breadboards. Resistors are electrical components that provide electrical resistance. Resistance is the opposite of conductance. Our professor said said that we could think of it as a skinny pipe, if the current is water trying to flow through. Resistance is measured in ohms. If you know the resistance and voltage in your circuit, you can figure out the current using Ohm's Law. Ohm''s Law is

I=V/R

Breadboards are boards with a bunch holes in them that you can plug wires and components into to build circuits. They are made up of a grid of holes that are connected horizontally, but not vertically. There are two columns of holes on either edge that are connected vertically. Those lines are where you normally connect you power and ground. 

After learning about resistance and breadboards, we plugged a power source into the breadboard, and wired it so that the columns on the edges had -12 V, 0 V and 12 V coming out of them. We were able to test this using the oscilloscope.