What is a Variable Resistor?Variable resistor definitionResistor whose resistance can be adjusted as needed. It is a common component in electronic circuits that allows current or voltage to be adjusted according to Ohm's law.Basic structure of variable resistorA variable resistor usually has three terminals: two fixed terminals at the end of the resistance track and one removable terminal (cursor). Depending on how the terminals are connected to the circuit, a variable resistor can be used as a

What is Electrical Resistance?Resistance definitionThe obstruction of the conductor to the current is called the resistance of the conductor, and the resistance is also a physical quantity that describes the conductivity of the conductor.Factors that affect resistance Length of material The cross-sectional area of the material Properties of materials Environment temperatureThe basic formula of resistance The relationship between resistance, voltage and current (Ohm's Law) The relationship betwee