Voltage divider and potentiometer

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SUMMARY

The discussion focuses on the functionality of potentiometers as potential dividers and their role in measuring unknown electromotive force (emf) of a cell. It highlights the confusion regarding the impact of reversing battery terminals in a potential divider circuit. The participants explore whether reversing the battery terminals affects the operation of the circuit when integrating an unknown emf source and a galvanometer. The consensus is that reversing the terminals alters the polarity, which can affect the measurement outcomes.

PREREQUISITES
  • Understanding of basic electrical circuits
  • Knowledge of potentiometers and their applications
  • Familiarity with electromotive force (emf) concepts
  • Experience with galvanometers and their usage in measurements
NEXT STEPS
  • Research the principles of voltage dividers in electrical engineering
  • Study the operation and applications of potentiometers in circuit design
  • Learn about the effects of polarity in electrical circuits
  • Explore advanced measurement techniques using galvanometers
USEFUL FOR

Electronics students, electrical engineers, and hobbyists interested in circuit design and measurement techniques will benefit from this discussion.

uzair_ha91
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This is so far I've learnt...potentiometer is a potential divider, it also functions to measure the unknown emf of a cell (Ex).
Here is the image of a potential divider:
1.gif

And here is one of a potentiometer:
p23pot1.jpg


The thing that confuses me here is that if you compare both images, you will see that the battery terminals are reversed in the next one...What would have happened if you had the circuit in image 1 and had added the unknwn emf source and galvanometer in the parallel without changing anything else? Does it make difference in the operation if you have a potential divider and you reversed the terminals of the battery?
(Hope this all makes sense to you guyz cause I'm pretty confused here)
 

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Hello uzair show what you already know and then report back.
 
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