A resistor is an electronic part type that is found in many circuit assemblies, tasked with implementing electrical resistance. Coming in a variety of forms, resistors can be used for adjusting signal levels, dividing voltages, terminating transmission lines, biasing active elements, and much more. There are also two major groups of resistors, those being fixed resistor and variable resistor types. While fixed resistor components exhibit a set resistance level that remains constant over time, variable resistors are able to have their resistances changed so that they can adjust circuit elements or act as a sensing device. In this blog, we will discuss the common types of resistors that feature adjustable resistance, allowing you to better understand how such components are used within the realm of electronics.