Work on a proton/Electic Potential

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SUMMARY

The discussion centers on calculating the external work required to move a proton from a potential of 95 V to -54 V. The relevant equation used is U = qV, where U represents potential energy, q is the charge of the proton, and V is the electric potential. The user initially struggled with determining the charge (q) but ultimately resolved the problem independently. The correct approach involves recognizing the relationship between potential energy and work, expressed as U = -W.

PREREQUISITES
  • Understanding of electric potential and potential energy
  • Knowledge of the charge of a proton (approximately 1.6 x 10-19 C)
  • Familiarity with the equation U = qV
  • Basic grasp of the concept of work in physics
NEXT STEPS
  • Review the concept of electric potential and its applications in electrostatics
  • Learn about the relationship between work and electric potential energy
  • Explore examples of calculating work done in electric fields
  • Study the principles of charge interactions and their effects on potential energy
USEFUL FOR

Students studying physics, particularly those focusing on electromagnetism, as well as educators seeking to clarify concepts related to electric potential and work in electric fields.

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Homework Statement



Imagine that a proton is held on the end of an insulated rod. How much external work is needed to move the proton from a point with a potential of 95 V to a point where it is -54V?
Express your answer in Joules, watch out for the sign of the answer.

Homework Equations





The Attempt at a Solution


I thought that you could use U=qV but it's not working- I also don't know what the point charge (q) would be. I chose this equation because you can relate the change in potential to work (U=-W)... Guidance would be great!
 
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Nevermind, I figured it out.. :)
 

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