Finding the electric field at a given point

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SUMMARY

The discussion focuses on calculating the electric field at specific points A and B around a sphere with two concentric shells, each carrying charges q1 and q2. The participant derived the formula E = k * (q1 + q2) / c^2 but struggled to find the correct expressions for points A and B. The solution emphasizes the importance of applying Gauss's Law and considering the symmetry of the charge distribution to derive the electric field accurately.

PREREQUISITES
  • Understanding of Gauss's Law
  • Familiarity with electric fields and charge distributions
  • Knowledge of spherical symmetry in electrostatics
  • Basic algebra for manipulating equations
NEXT STEPS
  • Study the application of Gauss's Law in electrostatics
  • Learn about electric field calculations for spherical charge distributions
  • Explore the concept of electric field lines and their relation to charge symmetry
  • Review examples of electric fields in multi-shell systems
USEFUL FOR

Students studying electromagnetism, physics educators, and anyone seeking to understand electric fields in systems with spherical symmetry.

kirax105strike
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Homework Statement



I have a sphere with two thin concentric shells with radii R2 and R3 with charges q1 and q2. I am trying to find the formulas for find the electric field for A and B.

The Attempt at a Solution



I found C to be E = k * (q1+q2)/c^2 but I cannot seem to figure out the correct formulas for A and B. Here is a picture of the sphere http://imgur.com/cWS8r5G
 
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Think about the symmetry of the problem and then use Gauss's Law!
 

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