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```				   A sphere of radius R contains space charge density ρ(r)=A(R-r) for 0
Express A in terms of Q and R.
Find the electric field inside and outside the sphere
```

7 years ago

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### Answers : (1)

```										volume element, dv = 4*pi*r2*dr        integration between 0 to R , ρ(r)dv =Q    Integration [4pi*r2*dr A(R-r)]= Q   Integration [4pi*r2*dr A(R-r)]= Q/4pi    AIntegration [r2R-r3)dr]    =               A           =  Q/4pi*Integration [r2R-r3)dr]sher mohammadfaculty askiitiansb.tech, iit delhi
```
2 years ago

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