Explaination to potentiometers ?

  • Thread starter Thread starter MoAli
  • Start date Start date
Click For Summary
SUMMARY

The discussion focuses on understanding potentiometers, specifically their function as variable resistors whose resistance varies with the position of a cursor. When two cells with different electromotive forces (emf) are connected in a circuit, the potentiometer can indicate zero emf at a specific distance, referred to as distance x. As the slider of the potentiometer is moved, the changes in resistance and emf can be analyzed to solve related problems effectively.

PREREQUISITES
  • Understanding of basic electrical concepts, including voltage and current.
  • Familiarity with the principles of electromotive force (emf).
  • Knowledge of variable resistors and their applications in circuits.
  • Basic skills in circuit analysis and problem-solving techniques.
NEXT STEPS
  • Research the principles of electromotive force (emf) in electrical circuits.
  • Learn about the operation and applications of variable resistors, specifically potentiometers.
  • Study circuit analysis techniques involving multiple power sources.
  • Explore practical examples of using potentiometers in electronic devices.
USEFUL FOR

Electronics students, hobbyists, and engineers seeking to deepen their understanding of potentiometers and their role in circuit analysis.

MoAli
Messages
12
Reaction score
0
Hey Guys,
Im desperate for help on that topic. I have no idea how the device work so an explanation would be appreciated; if someone can give me a hint on solving the problems when there are two cells in a circuit with different emf and the question says that when the potentiometer is at distance x emf is zero and then starts moving the slide of the device and asks about changes. Thanks
 
Physics news on Phys.org
The potentiometer is a device which resistance depends on the position of a cursor. This means that they are variable resistors, where the resistance is proportional to a constant (in units of ohm/meter) times a distance.
 

Thread 'Does acceleration affect impact energy vs constant velocity?'

I do not have a good working knowledge of physics yet. I tried to piece this together but after researching this, I couldn’t figure out the correct laws of physics to combine to develop a formula to answer this question. Ex. 1 - A moving object impacts a static object at a constant velocity. Ex. 2 - A moving object impacts a static object at the same velocity but is accelerating at the moment of impact. Assuming the mass of the objects is the same and the velocity at the moment of impact...
View full post »

Similar threads

Potentiometer : how that balancing point is reached?
  • · Replies 2 ·
Replies
2
Views
12K
Undergrad EMFs, what energy comes off items? How to explain?
  • · Replies 5 ·
Replies
5
Views
2K
Calculating Galvanometer Current in Potentiometer Circuit | 2.0V Driver Cell
  • · Replies 7 ·
Replies
7
Views
3K
How Do You Calculate Slider Position on a Potentiometer?
  • · Replies 50 ·
2
Replies
50
Views
9K
Direct and alternating current, a personal approach to understand them
  • · Replies 1 ·
Replies
1
Views
2K
How Much Power Is Needed to Generate an EMP?
  • · Replies 3 ·
Replies
3
Views
3K
Amplify Position Sensor Circuit
  • · Replies 6 ·
Replies
6
Views
2K
Potentiometer Circuit Question: Understanding Electron Flow and Resistance
  • · Replies 6 ·
Replies
6
Views
9K
Archived Balanced length of a potentiometer wire
  • · Replies 2 ·
Replies
2
Views
13K
High School How Can Time Dilation Be Explained Without Math?
  • · Replies 24 ·
Replies
24
Views
3K