# data[].attributes.body
1.in an electric circuit resistors are used to control the flow of current.we can connect resistors in two ways in a circuit series and parallel.in series combination the resistance is calculated by adding all the resistors value.in parallel we can calculate the resistance value as 1/r 1 and so on.
2.a potentiometer is a manually adjustable three terminal device.it has two ends for resistance and one end for the wiper and it works similar to the resistors.

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*. The function of a resistor is always to oppose the flow of current through it and the strength of this opposition is termed as its resistance.
THE DIFFERENCE  BETWEEN RESISTER AND POTENTIOMETER
*. The potentiometer must never be shunted around the B battery or the latter will soon run down.
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RESISTOR:
A resistor is an electrical components that limits the flow of electric current in an electronic circuit.
It is used in all electronic circuit.
There are two types of resisters they are:
*fixed resistor
*variable resistor.

POTENTIOMETER:
The measuring instrument called a potentiometer is essentially a voltage divider used for measuring electric potential or voltage.
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THE purpose of resistor in a circuit:
*Resistors are used to reduce the flow of current in an electric circuit .it adjust the levels to divide the voltage .
*it is used in all electronic circuit.
the are 2 types of resistors .
*fixed resistor
*variable resistor

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The main function of the resistor in a circuit to control the flow of current in the components
example:
if too much of current flow in led it may destroy when it has resistor it make limit the flow of current.

2. A potentiometer is a three terminal variable resistor but resistor is two variable resistor . potentiometer is often used to vary voltage and resistor is used as vary current.

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1.resistor are used to reduce the flow of current in an electric circuit .it adjust the signal levels to divide voltage .
2.  rheostat is simply a variable resistance used to control power to a load and you are correct about the wiring. Only the slider and one other terminal are used a potentiometer uses all three terminals, enabling a variable voltage or signal to be tapped off from the slider.

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1resistor
is used to limit the current .
*to control the flow of current
take led light for ex; *the flow of current will pass more and the led light will destory.so that we using resistor .
different between resistor and potentiometer.

RESISTOR- It is a two terminal circuit element used to create obstruction in path of flow of current.

POTENTIOMETER- It is three terminal resistor either with a sliding contact which forms an voltage divider. If only the input terminal and slider or rotating terminal is used, it works as a rheostat or a variable resistor.

# data[].attributes.headline
1.What is the purpose of resistor in a circuit?       2.What is the difference between resistor and potentiometer?

# data[].attributes.subject
1.What is the purpose of resistor in a circuit?       2.What is the difference between resistor and potentiometer?

# data[].attributes.body
1.The main function of resistors in a circuit is to control the flow of current to other components.

# data[].attributes.body
Resistance in the measure of opposition to electric current. A short circuit is an electric circuit offering little or no resistance to the flow of current. short circuits are dangerous with high voltage power source because the high current.encountered can cause large amount of heat energy is released.