Graphing e field for ring charge

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SUMMARY

The discussion focuses on graphing the electric field (E) for a ring charge using the formula E=(kqz)/(z^2+a^2)^1.5. Key points established include the locations of maximum and minimum electric field values at z=a/sqrt(2) and z=-a/sqrt(2), respectively. The participant also highlights the importance of evaluating E at z=0, determining the sign of E for negative z values, and identifying where E=0. These calculations are essential for sketching the overall shape of the graph.

PREREQUISITES
  • Understanding of electric fields and Coulomb's law
  • Familiarity with calculus, particularly derivatives and critical points
  • Knowledge of graphing techniques for mathematical functions
  • Basic concepts of limits in calculus
NEXT STEPS
  • Learn how to apply calculus to find critical points and inflection points in functions
  • Study the behavior of electric fields in different geometries, such as point charges and ring charges
  • Explore graphing software tools like Desmos or GeoGebra for visualizing electric fields
  • Investigate the concept of limits and asymptotic behavior in calculus
USEFUL FOR

Students studying electromagnetism, physics educators, and anyone interested in visualizing electric fields in electrostatics.

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Homework Statement


E=(kqz)/(z^2+a^2)^1.5 Through calculus i found that the max occurs at z=a/sqrt(2) and z=-a/sqrt(2) and I think the negative one is the minimum. That answer was given in the book also. The ring has radius a. It wants me to graph E versus z. I'm a little confused on how to graph this. the only 2 points I have on there are 1 max and 1 min but I don't know how to draw the general shape.

Homework Equations


The Attempt at a Solution

 
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There are two points you know: the places of maximum and minimum. What is E at z=0? What is the sign of E at negative values of z? Where is E=0? What are the limits at infinity and at -infinity? From these, you can sketch the curve.

ehild
 

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