rheostat
variable resistor

A variable resistor would dissipate power by heat (efficiency as low as 0.5).

But the sensors, flexible strips of carbon-coated plastic that act as variable resistors, needed to be attached to something.

The name is a portmanteau of variable resistor.

Other, ohmic types of variable resistor include the potentiometer and the rheostat.

A variable resistor is a long resistor that can be adjusted.

The input was six potentiometers (variable resistors) each having a dial with 26 letters.

A humistor is a type of variable resistor whose resistance varies based on humidity.

If only two terminals are used, one end and the wiper, it acts as a variable resistor or rheostat.

The depth control limits the amount of application the variable resistor has on the audio signal.

The variable resistor is adjusted until the galvanometer reads zero.