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Electric flux

  • #1

Homework Statement


A charge of 2.1 µC is 20 cm above the center of a square of side length 40 cm. The permittivity of free space is 8.85*10^-12 C^2/N*m^2. Find the flux through the square. Answer in units of N*m^2/C.


Homework Equations





The Attempt at a Solution


I really need some help with starting this problem... =(
 

Answers and Replies

  • #2
LowlyPion
Homework Helper
3,090
4

Homework Statement


A charge of 2.1 µC is 20 cm above the center of a square of side length 40 cm. The permittivity of free space is 8.85*10^-12 C^2/N*m^2. Find the flux through the square. Answer in units of N*m^2/C.

Homework Equations



The Attempt at a Solution


I really need some help with starting this problem... =(
Maybe consider constructing a Gaussian surface that is a 6-sided cube?
 
  • #3
I haven't exactly gotten used to constructing formulas for Gaussian surfaces so could you explain how to do it?
 

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