Electric fields between parallel plates

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SUMMARY

The discussion focuses on calculating the kinetic energy gained by a +0.25 C charge as it moves through specified distances between two parallel plates that generate an electric field of 12 N/C. The relevant equations include V = PE/q for voltage and PE = Vq for potential energy. The key insight is that the charge gains kinetic energy as it moves from one position to another, specifically losing potential energy (PE) in the process. The correct approach involves calculating the change in potential energy as the charge advances through each specified distance.

PREREQUISITES
  • Understanding of electric fields and potential energy
  • Familiarity with the equations V = PE/q and PE = Vq
  • Basic knowledge of kinetic energy concepts
  • Ability to perform calculations involving electric fields and charges
NEXT STEPS
  • Calculate the potential energy at each specified distance (0, 1/4, 1/2, 3/4, and 0.8 m) using PE = Vq.
  • Determine the change in potential energy between each distance to find the kinetic energy gained.
  • Explore the relationship between electric fields and forces acting on charges.
  • Review concepts of energy conservation in electric fields.
USEFUL FOR

This discussion is beneficial for physics students, educators, and anyone studying electromagnetism, particularly those interested in the dynamics of charges in electric fields.

halo168
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Homework Statement


Two large parallel plates are 0.8 m apart and generate an electric field of 12 N/C between them.
  1. At 0, 1/4, 1/2, 3/4, and full distance (0.8m), how much kinetic energy does a +0.25 C charge gain as it passes through each location?

Homework Equations


V = PE/q

The Attempt at a Solution


I found the voltages of each distance with the equation E=Vd solving for V. Then, I found the PE(electrical) using PE = Vq where q = +0.25 C. How do I find the Kinetic Energy?
 
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halo168 said:
At 0, 1/4, 1/2, 3/4, and full distance (0.8m), how much kinetic energy does a +0.25 C charge gain as it passes through each location?
That's poorly worded. It doesn't gain energy as it passes through a location, it gains it as it advances from one to the next.
When it goes from the 0 to the 1/4 location, how much PE does it lose? What becomes of that PE, assuming no force to hinder it?
 

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