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A potentiometer is a variable resistor, while a voltmeter is a device that measures voltage.
Wiki User
∙ 12y ago
Wiki User
∙ 8y agoA voltmeter is used to read voltage values. A potentiometer is used to vary voltage values.
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Why is copper wire not used in potentiometer?
Copper is not used in potentiometer due to the following reasons: 1)Low resistivity 2) High Temperature Coefficient of resistance
Why cant you use voltmeter 2 calculate emf of a cell?
because voltmeter is used to measure the voltage
What is used to measure voltage?
a voltmeter is used to measure voltage
Why is fructose rather than glucose used in slimming foods?
it tastes sweeter and has less calories than glucose
How do you connect a voltmeter in parallel circuit?
A voltmeter is used to measure potential difference across two points in an electrical circuit . The voltmeter is connected in parallel across the circuit element (resistance ) so that its inclusion in the circuit has negligible effect on total resistance and current flowing in yhe circuit A voltmeter has high resistance,if connected in series it will increase of circuit and reduce the current in the circuit
Which is preferred for measuring emf of a cell avoltmeter or potentiometer?
A voltmeter is used to measure voltage. A potentiometer is used to vary the amount of resistance in a circuit - it has nothing to do with measuring.
What is the calibration of ammeter?
An ammeter should not be used as a voltmeter. An ammeter is a low impedance device that measures the current going through a circuit, often by measuring the small voltage across a known resistance. A voltmeter is a high impedance device that measures the voltage across a circuit. If you were to connect an ammeter as if it were a voltmeter, you would effectively short out the circuit, drastically affecting its operation, and potentially damaging both the circuit and the ammeter.
Can you measure the emf of a cell with a voltmeter?
you can, but you will not get accurate answer as voltmeter consumes some current. so, potentiometer is used instead to measure emf ---- the potentiometer must be set to the expected emf from the cell before you put the zero detector in circuit if its set too high it will charge the cell too low it will load the cell perhaps if you dont know the voltage of the cell before you measure it you should get a hi impedance voltmeter(electrometer) to set the potentiometer as close as you can manage before you connect the zero detector
What are uses of potentiometer?
A potentiometer is a variable resistor used in electronics.
How you can do Calibration of voltmeter by potentiometer?
A: The only calibration that a potentiometer is allow to do is on the resistance scale. The reason being is the internal battery looses capability with age so to compensate the pot. will change current available to make the ohmmeter to go to zero when the probes are shorted. To test a volts range then an accurate voltage must be used to verify calibration.
Can a potentiometer be used as a rheostat?
Yes.
Which instrument used to calibrate ammeter?
It is a potentiometer.
Why is copper wire not used in potentiometer?
Copper is not used in potentiometer due to the following reasons: 1)Low resistivity 2) High Temperature Coefficient of resistance
What is the purpose of a voltmeter in a circuit?
the purpose of a voltmeter is used to measure voltage in a circuit
What is voltmeter?
A voltmeter is a measuring instrument that is used in the measurement of the electric potential in volts.
Why there is an extension range of voltmeter when a series resistance not equal to voltmeter is used?
why is extention
What is electrogoniometer?
An electrical potentiometer that can be used to measure joint angles.
