Electronics Information Flash Card Set 379848

Card 1 of 10

Resistors are used to limit voltage and/or current in a circuit and can have a fixed or variable resistance. Variable resistors (often called potentiometers or rheostats) are used when dynamic control over the voltage/current in a circuit is needed, for example, in a light dimmer or volume control.

potentiometer / variable resistor
potentiometer / variable resistor

This circuit symbol represents a(n) __________.