Uniformly charged solid nonconducting sphere (insulator) (Inside E ∝ r; outside E=kQ/r²)
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Inside E ∝ r; outside E=kQ/r²
What each symbol means
| Symbol | What it stands for |
|---|---|
| Q | Total charge |
| R | Radius |
| r | Distance from centre |
When to use this
Uniform volume charge density ρ = 3Q/(4πR³).