|- align = "center" | |width = "25"| | |- align = "center" | | | Potentiometer |- align = "center" | | | |- align = "top" | Resistor | | Variable resistor |- align = "center" | |width = "25"| | |- align = "center" | | | Potentiometer |- align = "center" | | | |- align = "center" | Resistor | | Variable Resistor A resistor's a two-terminal electronic component that produces a voltage across its terminals that's proportional to the electric current through it in accordance with Ohm's law: » V =… (More on Resistor)