anonymous
  • anonymous
Electric potential. I have posted the questions as a picture. I hope somebody can help me.
Physics
  • Stacey Warren - Expert brainly.com
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katieb
  • katieb
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anonymous
  • anonymous
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anonymous
  • anonymous
Could you write down Gauss' Law?
nikvist
  • nikvist
Electric field for r>a \[E\sim\frac{1}{r^2}\]

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anonymous
  • anonymous
Electric field shall be calculated at all points in the space Calculate charge enclosed by sphere of radius r \[Q=\int\limits_{0}^{r}p(r)4\pi r^2dr\] we find \[Q'=\frac{Q}{a}r\] nor apply guass's law for spherical symmetry \[E=\frac{Qr}{4\pi r^2a \epsilon_0}\] now do this \[V=-\int\limits_{r}^{\infty}Edr\]
anonymous
  • anonymous
There are a few changes You must see through the now
anonymous
  • anonymous
Feel'in lazy to type
anonymous
  • anonymous
Above relation for E is for 0a \[E=\frac{Q}{4\pi \epsilon_0r^2}\]
anonymous
  • anonymous
Now potential \[Q=-\frac{Q}{4\pi \epsilon_0r}\] for r>a 0

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