+1995 What is a resistor?
a component with a fixed resistance
a component that stores charge
an electric device for variable resistance
a component that supplies voltage
A i think?
+37146 First choice
second choice is a capacitor
third choice is a potentiometer (technically a variable resistor.....like a volume control)
fourth choice is a power supply or battey
A potentiometer also divides the current flow. A device that does nothing else except vary the resistance is a rheostat.
+37146 TRUE !! 
Keeping it simple .... and potentiometers can be used as rheostat....
