How Do You Determine Potential Energy in Electric Field Calculations?

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SUMMARY

This discussion focuses on determining potential energy in electric field calculations, specifically in the context of the work-energy principle, W = ΔU + ΔK. Participants clarify that potential energy is associated with the configuration of charges in an electric field, while kinetic energy pertains to the movement of charges. The conversation emphasizes that gravitational potential energy is typically negligible for small point charges, and the inclusion of potential or kinetic energy in calculations depends on the specific problem being addressed.

PREREQUISITES
  • Understanding of electric fields and forces
  • Familiarity with the work-energy principle
  • Knowledge of kinetic and potential energy concepts
  • Basic principles of electrostatics
NEXT STEPS
  • Study the work-energy theorem in the context of electric fields
  • Learn about electric potential energy calculations for point charges
  • Explore examples of work done by electric fields in various scenarios
  • Review the differences between gravitational and electric potential energy
USEFUL FOR

Students preparing for physics exams, educators teaching electric field concepts, and anyone seeking to understand the relationship between work, kinetic energy, and potential energy in electrostatics.

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Electric Field and WORK...HELP...test TOMORROW!

Can someone explain to me when I am calculating work and W = Delta U + Delta K. How do I know when there is potential energy? This is for electric fields. I know there is Kinetic when the charge is moving.
 
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Are you talking about work done by an electric field?
 
yes.
 
Usually I do not think you consider gravitational potential energy as what you consider are very small point charges. What exactly do you need to know?
 
I want to know when do I know there is electric potential energy involved. Because in some of my problems when we calculate the work done we only include kinetic or only include potential and sometime both. But I don't know how to decipher when to use which ones? I hope I am making some sense : )
 
Hmmm...Well I cannot say for sure because that would depend on what the question is.
 

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