Calculating Charge at Point A Outside a Charged Sphere: Gauss Law Explained

[Luhter]

If I have a sphere and that has radius r and electric charge density of x
Then outside the sphere , in void (permittivity=$$\epsilon 0$$) , a point A which is at r+a distance from the sphere's center . What is the charge at point A ?

Ok i tried this at exam in a way with Gauss law,but it seems it was no good ... so I'm curious how is made

 

[djeitnstine]

Gauss's Law works, how did you attempt it? $$\int E \cdot dA = \frac{Q_{enc}}{\epsilon_0}$$

what type of charge density is it? linear, area or volumetric... either case you need to convert the enclosed charge term to its density form.

 

[turin]

What is the charge at point A ?

This question is nonsensical (or trivial if all of the charge is described by the problem statement).

 

[Wax]

I'm curious, which physics is this?

 

[queenofbabes]

I suppose the question is actually asking for electric field strength?