Demonstrations

How to make a Rheostat

A Rheostat (also known as a variable resistor) is an electrical component to vary the amount of current flowing through the circuit.

By Marina Phal & Manith Chuon

Fruit-Battery

A rheostat is a two-terminal variable resistor. Often these are designed to handle much higher voltage and current.

The symbol for a rheostat is a resistor symbol with an arrow diagonally across it.

Rheostats are used in many different applications, from light dimmers to the motor controllers in large industrial machines.

PhysicsField 2010-12-21 DEMOS
demonstrations