Potentiometer - calculating internal resistance of a cell | Electricity | Physics | Khan Academy
13:12
YouTubeKhan Academy India - English
Potentiometer - calculating internal resistance of a cell | Electricity | Physics | Khan Academy
To calculate internal resistance, we use a potentiometer to first calculate the voltage across the battery, with no current through it. Then we attach a resistor in parallel to the battery and recalculate the voltage across it. Since the current flows, this time the balancing length is smaller. Using the battery equation, we calculate the ...
62.8K viewsAug 28, 2020
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How To Use A Potentiometer In A Circuit In this short, we explain how to wire and use a potentiometer in a circuit. Learn the difference between voltage divider and rheostat setups, what taper means, and how resistance values affect behavior. #potentiometer #electrical #engineering #electricity #stem
How To Use A Potentiometer In A Circuit In this short, we explain how to wire and use a potentiometer in a circuit. Learn the difference between voltage divider and rheostat setups, what taper means, and how resistance values affect behavior. #potentiometer #electrical #engineering #electricity #stem
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