Name: Conversion of a Galvanometer Into a Voltmeter
Uploaded: 2019-07-19
Duration: 7 min 18 s
Description: This video helps us understand the working of a galvanometer. It also teaches us how to convert it into a voltmeter of the desired range both theoretically a...

Question

State the uses of a potentiometer

Accepted Answer

The applications (uses) of the potentiometer

Voltage divider: The potentiometer can be used as a voltage divider to change the output voltage of a voltage supply

Audio control: Sliding potentiometers are commonly used in modem low-power audio systems as audio control devices. Both sliding (faders) and rotary potentiometers (knobs) are regularly used for frequency attenuation, loudness control and for controlling different characteristics of audio signals.

Potentiometer as a sensor: lf the slider of the potentiometer is connected to the moving part of a machine, it can work as a motion sensor. A small displacement of the moving part causes a change in potential which is further amplified using an amplifier circuit. The potential difference is calibrated in terms of displacement of the moving part.

To measure the emf (for this, the emf of the standard cell and potential gradient must be known).

To compare the emfs of two cells

To determine the internal resistance of a cell.

State the uses of a potentiometer

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