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The difference between a variable resistor and a rheostat is the same as the difference between six and half a dozen.

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โˆ™ 2010-01-28 16:42:43
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Q: Difference between variable resistor and rheostat?
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Related questions

What is a resistor that can be adjusted between minimum and maximum by turning a dial is called a what?

It is a variable resistor. Basically, the same as when you turn up or down the heat on an electrical oven or radio.

What is the difference between a fixed resistor and a variable resistor?

its the colour of the fixed and the variable we define it by its power and name

Difference between variable and fixed resistor?

Variable resistors means that a resistor which can change its resistance by control by any person or it self and fixed resistor means that it can not change its value.

What is the difference between a variac and a rheostat?

These devices could, in theory, be interchangeable. Variac is a (typically single coiled) variable transformer, whereas rheostat is a variable resistor. Although they may look just the same, they differ in one aspect - wire resistance. It should be as low as possible for variac, but it can differ on rheostats. So-you can use wire rheostat as a low efficiency variac and you can use wire variac as ridiculously huge rheostat, resistive range of which serves no practical purpose.

How can a potentiometer be a rheostat?

A rheostat and a potentiometer are two different applications for the same device, a variable resistor. These devices have three terminals. Two terminals are connected across the complete resistor, while the third terminal is connected to a controllable wiper. The variable resistance is provided between the wiper terminal and either one of the other two terminals.When used to control current, it is called a rheostat. When used to control voltage, it is called a potentiometer.

What is the purpose of rheostat in a circuit?

To control the value of resistance in the circuit.e.g. In a simple circuit consisting of a cell/battery/power supply, a bulb and a rheostat, the more resistance you add with the rheostat gives a dimmer bulb, whereas you can decrease the resistance and resulting in a brighter bulb.Another AnswerVariable resistors have three connections: one at opposite ends, and the other connected the 'wiper'.Variable resistors can be used as rheostats or potentiometers. 'Rheostat' and 'potentiometer' are the names we give to how variable resistors are used; they are not the names given to the device itself.A rheostat is a variable resistor used to control current. To do this, it is connected in series with the load, and the connection is made between one of the outer terminals and the wiper terminal.A potentiometer is a variable resistor used to control voltage across a load. To do this, the supply voltage is connected between the two outer terminals, and the load is connected between one of the outer terminals and the wiper terminal.

What is the difference between normal resistance and potentiometer?

Resistors are either fixed value, or variable. A variable resistor has three terminals; one at either end and one attached to a moving 'wiper', and can be connected either as a potentiometer or as a rheostat. So 'potentiometers' and a 'rheostats' are different applications for variable resistors. A potentiometer uses all three terminals, and is used to control levels of potential; whereas a rheostat uses just two of the three terminals, and is used to control current.

Difference between potentiometer and voltmeter?

A potentiometer is a variable resistor, while a voltmeter is a device that measures voltage.

What is the difference between resistor and metrosil?

Resistors are ohmic and fixed whereas metrosils are non ohmic and variable - version of a varistor.

What is the difference between a control variable and a control treatment?

what is the difference between a variable and a control

The difference between fixed and variable inputs?

difference between fixed and variable inputs

What the difference between Transistor and resistor?

The difference between a Transistor and a Resistor is that a transistor is designed to amplify the electrical current, whereas a Resistor is designed to reduce the electrical current.

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