why we use potentiometer?
kailashyadav99pb39qr:
if we use voltmeter it draw some current from source so it cannot be calculated emf that's why potentiometer is used because it calculated emf and not draw current from sources
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The measuring instrument called a potentiometer is essentially a voltage divider used for measuring electric potential (voltage); the component is an implementation of the same principle, hence its name. Potentiometers are commonly used to control electrical devices such as volume controls on audio equipment
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