A Question about Energy conversion....

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Discussion Overview

The discussion revolves around the concept of energy conversion, specifically focusing on the transition of potential energy to kinetic energy in the context of electric charges. Participants explore the analogy between gravitational potential energy and electric potential energy, examining the implications of this analogy in different scenarios, including charges in a vacuum and in a circuit.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant describes lifting an object to impart potential energy and questions how this analogy applies to a positive charge near a positive plate and a negative plate.
  • Another participant states that as the charge moves towards the negative plate, it is accelerated and will convert its potential energy into kinetic energy.
  • A third participant questions whether the potential energy would convert into something other than kinetic energy, drawing parallels to gravitational scenarios.
  • A later reply notes that while the analogy holds for charges in a vacuum, it does not apply to charges in a wire within a closed circuit, where drift velocities are slow and kinetic energy is minimal.

Areas of Agreement / Disagreement

Participants express differing views on the applicability of the energy conversion analogy in various contexts, particularly between charges in a vacuum versus those in a circuit. No consensus is reached regarding the implications of these differences.

Contextual Notes

Limitations include the dependence on the specific conditions of the charge's environment (vacuum vs. circuit) and the assumptions regarding resistance and drift velocities in different scenarios.

Kaneki123
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Okay...Suppose we we lift up something from the ground upto a certain height. By doing so, we have imparted it some potential energy. If we now let go, it will start converting its potential energy to kinetic energy.Now, suppose we apply this analogy to the case of a positive charge place nearer a positive plate and further from a negative plate. The charge is said to be at higher electric potential( has higher potential energy) and will move to lower electric potential, which we call the negative plate. There is an obvious change in potential energy of the charge.My question is that into what is this potential energy converted(there are absolutely no "resistances" in the scenario...Any help is appreciated
 
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Well, the charge is being accelerated towards the negative plate. If you don't hold it back it will acquire as much kinetic energy as it loses in potential energy.
 
Kaneki123 said:
...converting its potential energy to kinetic energy...into what is this potential energy converted...
Why do you think it would be something else than with gravity?
 
@BvU gave you the answer for charges drifting in a vacuum.

Do not try to apply that to charges in a wire as part of a closed circuit. In a circuit, the drift velocities of electrons in the wires are very slow, so kinetic energy plays almost zero role.
 
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