Electric Potential & Kinetic Energy

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SUMMARY

The discussion centers on the relationship between electric potential and kinetic energy for an electron moving between points A, B, and C. Given that point A has an electric potential of 332 V and point B has 149 V, the kinetic energy (K) of the electron when released from A to C is less than when released from B to C, where it is 2K. The confusion arises from the differing electric potentials and their impact on kinetic energy, leading to the conclusion that the electric potential at point C must be calculated using the work-energy principle, specifically W = q*ΔV.

PREREQUISITES
  • Understanding of electric potential and kinetic energy concepts
  • Familiarity with the work-energy principle in physics
  • Knowledge of basic electrostatics and charge interactions
  • Ability to manipulate equations involving voltage and energy
NEXT STEPS
  • Study the work-energy theorem in electrostatics
  • Learn how to calculate electric potential differences using W = q*ΔV
  • Explore the concept of energy conservation in electric fields
  • Investigate the behavior of charged particles in varying electric potentials
USEFUL FOR

Students studying physics, particularly those focusing on electromagnetism, as well as educators looking for examples of electric potential and kinetic energy relationships.

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Homework Statement


Points A and B have electric potentials of 332 V and 149 V, respectively. When an electron released from rest at point A arrives at point C, its kinetic energy is K. When the electron is released from rest a point B, however, its kinetic energy when it reaches point C is 2K. What is the electric potential at point C? What is the kinetic energy K?


Homework Equations


I don't know exactly what to use, so I'd rather not list all available equations...


The Attempt at a Solution


I tried using Energy Conservation but kept getting a contradiction. The fact that the electric potential at Point A is larger than the electric potential at Point B but the kinetic energy gained while traveling from A to C is less than that from traveling from B to C is confusing me. Help?
 
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