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A variable resistor is a resistor whose resistance can be changed. It is used to control the amount of current flowing through a circuit.
Variable resistors are often used in dimmers and volume controls. They can also be used to control the speed of a motor or the brightness of a light bulb.
The variable resistor was used to control the brightness of the LED.
Noun: an electrical resistor whose resistance can be changed.
Adjective: of or relating to a variable resistor.
The word "variable resistor" comes from the combination of the words "variable" and "resistor".
The word "variable" comes from the Latin word "variabilis", which means "changeable".
The word "resistor" comes from the Latin word "resistere", which means "to withstand".
The first recorded use of the word "variable resistor" in English was in the 19th century.
When might you use a variable resistor?