# Uncharged spherical conducting shell!

1. Jul 15, 2014

### VU2

An uncharged spherical conducting shell surrounds charge -q at the center of the shell. Then a charge+ +3q is placed on the outside of the shell. When static equilibrium is reached, the charges on the inner and outer surfaces of the she are respecteively... +q,-q is the answer.

Does the +3q charge play any roll in that answer? Help. Thanks!

2. Jul 15, 2014

### SammyS

Staff Emeritus
Do you know Gauss's Law ?

3. Jul 15, 2014

### VU2

Yes, its E=q/[ε*area], where q is the charge enclosed.

4. Jul 15, 2014

### SammyS

Staff Emeritus
That should give you your answer.

5. Jul 15, 2014

### VU2

So +3q charge doesn't play any roll at all right?

6. Jul 15, 2014

### SammyS

Staff Emeritus
That is correct, as far as the total charge on the exterior. However,the +3q does affect the distribution of that charge.

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