# Net Electric Flux: Homework Part A, Part B

• DMDil
In summary, the conversation discusses two parts of a question regarding net electric flux through spheres of different radii and positions. The first part involves finding the net electric flux through a sphere of radius 2a centered at the origin, while the second part involves finding the net electric flux through a sphere of the same radius centered at x=2a. The person asking for help has already attempted part A, but needs assistance with part B. They also mention that they have a solution for part B.
DMDil

## 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:
Draw a 2D sketch of the sphere in part B...which charge(s) does it enclose?

thanks anyway,, for part B
i got +2Q/E0

## 1. What is net electric flux?

Net electric flux is a measure of the amount of electric field passing through a given surface. It is defined as the total number of electric field lines passing through a surface per unit area.

## 2. How is net electric flux calculated?

The net electric flux can be calculated by taking the product of the electric field strength and the surface area perpendicular to the field. This is represented by the formula Φ = E * A * cos(θ), where Φ is the net electric flux, E is the electric field strength, A is the surface area, and θ is the angle between the electric field and the surface.

## 3. What is the unit of measurement for net electric flux?

The unit of measurement for net electric flux is volt-meters (V*m) or newton-meters squared per coulomb (N*m2/C).

## 4. How does the direction of the electric field affect net electric flux?

The direction of the electric field is an important factor in determining the net electric flux. If the electric field is perpendicular to the surface, the net electric flux will be the maximum. If the electric field is parallel to the surface, the net electric flux will be zero.

## 5. What is the significance of net electric flux?

Net electric flux is an important concept in understanding the behavior of electric fields. It helps in calculating the total electric field passing through a surface and can be used to determine the charge enclosed within a given surface. It is also used in various applications such as Gauss's law and electric potential calculations.

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