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Why potentiometer is called passive transducer?

because potentiometer generate a own current


Why electric current should not be passed through the potentiometer for a long time continuously?

Passing electric current through a potentiometer for a long time continuously can cause overheating of the resistive coil and wiper, leading to damage. This can also result in changes to the resistance value and accuracy of the potentiometer, impacting its functionality. It is recommended to use the potentiometer within its specified ratings to prevent such issues.


What does a potentiometer do?

A potentiometer varies the amount of current through an electrical or electronic circuit. EX: the volume control on your radio is a potentiometer. In today's electronic circuitry, digital circuits that change resistance do the same job as the rotary type control do. They tend to be more accurate.


What is another term for potentiometer?

A potentiometer and a rheostat are two different applications for a variable resistor.A potentiometer is a variable resistor, connected (using its three terminals) as a variable potential divider.A rheostat is a variable resistor, connected (using two of its three terminals) to adjust current.


What is the name of a variable resistor with 3 terminals?

It's called a 'variable resistor'. However, it can function as a 'rheostat' (to control current) when two terminals are connected, or as a 'potentiometer' (to control voltage) when three terminals are connected. The terms, 'rheostat' and 'potentiometer' do not describe the device itself, but how it is being used.


What is the effect of increasing the resistance of the potentiometer to the current flowing in the collector of the transistor?

the collector voltage is lowered, because the collector is essentially a current source controlled by the base emitor current


Why potentiometer is more accurate than voltmeter?

A potentiometer is able to measure very small changes in voltage by allowing the user to manually adjust the resistance until the desired voltage is reached. This control over the resistance provides a more precise and accurate measurement compared to a voltmeter, which simply displays the voltage at a fixed range without adjustment.


What type of transducer Is potentiometer?

what type of transducer potentiometer


What are uses of potentiometer?

A potentiometer is a variable resistor used in electronics.


Why emf of cell measurd by potentiometre is accurate?

The electromotive force (emf) of a cell measured by a potentiometer is accurate because a potentiometer measures the potential difference between the two electrodes without drawing any current from the cell, leading to minimal disturbance in the cell's internal resistance. This allows for a more precise measurement of the emf of the cell under open circuit conditions.


Define potentiometer?

A dual potentiometer is nothing but a potentiometer which has TWO channels.. Like two INs and two OUTs on the same unit.


A potentiometer may be used for?

potentiometers are used for adjustment to electrical current and are often applied in audio. EX: a volume control switch