Electrostatics problem, kinda confusing

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SUMMARY

This discussion focuses on plotting the electric field generated by two charges, -q and +q, positioned at x = -a and x = +a, respectively. Participants suggest using a spreadsheet to visualize the electric field along the x-axis, recommending a plotting range of +/- 5 to 10 times 'a'. The application of Coulomb's Law is emphasized for calculating the electric field, with a note that the field becomes infinite at the locations of the charges, which may cause issues in spreadsheet calculations.

PREREQUISITES
  • Understanding of Coulomb's Law
  • Familiarity with electric fields and their properties
  • Basic spreadsheet software skills (e.g., Microsoft Excel or Google Sheets)
  • Knowledge of plotting graphs and interpreting data
NEXT STEPS
  • Learn how to apply Coulomb's Law for multiple point charges
  • Explore spreadsheet techniques for handling infinite values in calculations
  • Study electric field visualization methods using software tools
  • Investigate the concept of electric field lines and their significance
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Students studying electrostatics, physics educators, and anyone interested in visualizing electric fields and understanding charge interactions.

djlightsout06
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Two charges, one -q and one +q are located at x=-a and x=+a, respectively. Use a spreadsheet to plot the electric field along the x asix. Part of this problem is choosing a reasonable range for the plot.

How do I go about doing this?
 
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How about a range of about +/- 5 or 10 a's?
 
what about the rest of the problem. I'm having a lot of problems grasping the concept of E-fields and stuff.
 
For the rest of the problem simply apply Coulomb's Law to calculate the electric field produced by the two charges. Your difficulty will be that at the locations of the two charges the field will be infinite and your spreadsheet will not like that!
 

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