Therefore, after winding, resistance elements can have highly variable ... the initial resistor tolerance was ±0.05% or ±1%. When changes amounting to ±2% occur, a total design tolerance span of 6% ...

Moving the position of the slider on this resistor, changes the length of wire in the circuit which changes the resistance. A variable resistor is used in some dimmer switches and volume controls.

Understanding how they function can make ... fuses, and circuit breakers. In the case of analog gauges, the sending unit or “sender” is a variable-resistor contact switch to ground.

eg on a radio, and speed controls, eg on a mixer or a drill. There is usually a dial or sliding switch on the variable resistor which rotates or slides ...