How does a rheostat work?

Answer

A rheostat is a variable resistor. The way it works is that there is a terminal at one end of the resistor. The other terminal is attached to a wiper that moves along the resistor. Current flows between the two terminals. If the wiper is moved across the resistor, the resistance in the path of the current will change. The resistor itself often consists of high resistance wire wound around an insulator. As the wiper contact moves from wire to wire of the winding, the resistance changes.
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5 Additional Answers
A rheostat works through the use of a coiled wire. This coiled wire provides resistance, therefore allowing more control over the current. You can find more information at www. superpages. com/supertips/rheostat. html
A rheostat works by changing the amount of energy that is flowing through a circuit. A rheostat is a variable resistor with two contacts. It essentially resists the flow of energy trying to pass through it.
A rheostat controls how fast a current flows through a circuit. For example a dimmer switch on a lamp is a rheostat. The dimmer the light the more resistance the rheostat is putting on the current, therefore the light is receiving less electricity and is not as bright. When the light is very bright, the rheostat is not resisting the flow of electricity.
A rheostat works by changing the amount of energy that is flowing through a circuit. A rheostat is a variable resistor with two contacts. It essentially resists the flow of energy trying to pass through it.
A rheostat controls how fast a current flows through a circuit. For example a dimmer switch on a lamp is a rheostat. The dimmer the light the more resistance the rheostat is putting on the current, therefore the light is receiving less electricity and is not as bright. When the light is very bright, the rheostat is not resisting the flow of electricity.
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