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a variable resistor is often called a control potentiometer ,

and would be used to supply a set voltage depending on the position of the wiper contact on the resistor assembly .

........

an example would be a speed control device on a motor , including battery drill drivers , a mini hand held drill tool for use in craft projects , a volume control slide/ positioner , which controls the amount of signal and hence the volmue at whic music is played on a music system throu speakers.

it could also be used in lighting control circuits , such as dimmer controls .

where it sets the level of light output by varying the applied volatge to the lamp

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14y ago
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15y ago

any letter if you're talking about math example: a, x, b

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14y ago

A discrete graph can not have variables that have decimals or fractions so an example could be the number of babies born in a month. (You can't have half a baby)

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Q: Example of discrete variable
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