Potential inside a concentric sphere

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SUMMARY

The discussion centers on calculating the electric potential at the center of a concentric sphere using the Poisson equation, specifically $$\nabla \phi = - \frac{\rho}{\epsilon}$$. The user concludes that the potential at the center is equivalent to the potential at radius R1 due to the zero electric field inside a hollow spherical shell. The derived potential equation is $$\phi = \sum K_{i}(\frac{\rho(R_{2}^2-R^2)}{6 \epsilon} + C(\frac{1}{R_{2}}-\frac{1}{R}))$$. The user expresses confusion regarding the influence of charges located inside the shell on the potential calculation.

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  • Understanding of the Poisson equation in electrostatics
  • Knowledge of electric fields and potentials in spherical coordinates
  • Familiarity with concepts of hollow spherical shells in electrostatics
  • Basic principles of charge distribution and its effects on electric fields
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  • Study the implications of Gauss's Law on electric fields within spherical shells
  • Learn about the effects of point charges on the potential inside a spherical shell
  • Explore the derivation of electric potential from electric field equations
  • Investigate the application of the superposition principle in electrostatics
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Students and professionals in physics, particularly those focusing on electrostatics, as well as educators seeking to clarify concepts related to electric potential and fields in spherical geometries.

LCSphysicist
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I am rather confused how to answer this (Please focus on "find the potential at the center"):
I thought that would be a good idea try to answer this with the Poisson equation.
$$\nabla \phi = - \frac{\rho}{\epsilon}$$
So that, since the eletric field inside a hollow spherical shell is zero, the potential at the center is just equal to the potential at R1.
I found this solution
$$\phi = \sum K_{i}(\frac{\rho(R_{2}^2-R^2)}{6 \epsilon} + C(\frac{1}{R_{2}}-\frac{1}{R}))$$

But i have no idea how to go on
 
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Herculi said:
since the eletric field inside a hollow spherical shell is zero
Not if there are charges inside the shell.
 
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