Saliency Variable Resistor Assorted Kit 13 value 130pcs potentiometer

in this video we're gonna talk about potential meters potential meters are devices that can limit the current flow in a circuit and they can attenuate a signal or even reduce the voltage across certain elements potential meters are essentially variable resistors this particular potential meter has three terminals we'll call the first one a the middle one B and the last one C as you rotate it towards the right that is in the counterclockwise direction the resistance between points B and C increases whereas the resistance between a and B decreases and if you turn it in this direction towards a that is in the clockwise direction the resistance between a and B increases while the resistance between B and C decreases and we're going to talk about the math regarding this shortly so here we have the electrical symbol of a potential meter or variable resistor this is point a point B and Point C