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A resistor is a passive two-terminal electrical component that implements electrical resistance as a circuit element. Resistors act to reduce current flow, and, at the same time, act to lower voltage levels within circuits. In electronic circuits, resistors are used to limit current flow, to adjust ..

These 200k Potentiometers have the benefit of having a low profile so they stay out of the way once you have it set up the way you would like it. Though the pot is designed more for PCB breadboards it can easily fit in a solder less breadboard with a slight turn which is demonstrated in the picture ..