Net Electric Flux: Homework Part A, Part B

AI Thread Summary
The discussion revolves around calculating the net electric flux for two charges, q1 = -6Q and q2 = +2Q, positioned at x = -a and x = +a, respectively. For Part A, the net electric flux through a sphere of radius 2a centered at the origin is calculated as -4Q/E. In Part B, the focus shifts to determining the net electric flux through a sphere of the same radius but centered at x = 2a, which encloses only the charge q2. The final answer for Part B is +2Q/E0, indicating the flux contribution from the enclosed charge. Overall, the calculations demonstrate the relationship between charge position and electric flux through different spherical surfaces.
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Homework Statement



This is the question.
Charges q1= -6Q and q2 = +2Q are located at x =-a and x = +a, respectively.

Homework Equations


Part A
What is the net electric flux through a sphere of radius 2a centered at the origin?
Part B
What is the net electric flux through a sphere of radius 2a centered at x=2a?

NEED help with part B

The Attempt at a Solution



For part A
i did \Phi = (-6Q+2Q)/E ; so = -4Q/E
 
Last edited:
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Draw a 2D sketch of the sphere in part B...which charge(s) does it enclose?
 
i have got the answer
thanks anyway,, for part B
i got +2Q/E0
 
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