What is Electric flux: Definition and 283 Discussions
In electromagnetism, electric flux is the measure of the electric field through a given surface, although an electric field in itself cannot flow. It is a way of describing the electric field strength at any distance from the charge causing the field.
The electric field E can exert a force on an electric charge at any point in space. The electric field is the gradient of the potential.
[b]1. The problem is:
A vertical wall (5.9m x2.5m) in a house faces due east. A uniform electric field has a magnitude of 150 N/C. This field is parallel to the ground and points 35degrees north of east. What is the electric flux through the wall?
[b]2. Homework Equations :
Electric...
Homework Statement
A point charge of 43 microcoulombs is located a distance 48 meters from an infinite plane. Determine the electric flux through the plane due to the point charge.
Homework Equations
flux = integral E d A = enclosed charge / epsilon_0
E = kQ / r^2
The Attempt at a...
A 2.10- mC charge is placed at the center of a cube of sides 6.40 cm. Determine the electric flux through each of the sides.
ok so electric flux=E(A)
so i figure that the electic flux will be the same for all six sides of the cube so i am just calculating the flux on one side then X6...
Homework Statement
A square loop with resistance 15 ohms is placed perpendicular to a time varying magnetic field; the loop is 8.2 cm. The magnetic field is changing with a rate of 3.4 x 10^-7 T/s.
-Draw the loop, magnetic field, and current in the diagram
-calculate the rate at which the...
Electric Flux of a cube
Homework Statement
A point charge of magnitude 9.10 nC is at the center of a cube with sides of length 0.685 m.
What is the electric flux through each of the six faces of the cube?
What would be the flux Phi_1 through a face of the cube if its sides were of...
Homework Statement
A cylindrical piece of insulating material is placed in an external electric field, as shown in the figure. The net electric flux passing through the surface of the cylinder is
a.positive.
b.negative.
c.zero.
Figure ...
Homework Statement
A cube has a charge Q at its center and has 6 charges q placed symetrically around the central charge. Each one is placed the same distance from the central charge down respective axises which are perpendicular to the planes of the cube which they pass through the center of...
Homework Statement
What is the net electric flux through the torus (i.e., doughnut shape) of the figure
Homework Equations
net flux= E*A I believe is needed
The Attempt at a Solution
I don't know how to do this problem at all. I feel like I don't have enough information to...
Homework Statement
"Given a constant electric field E = E(subscript 0)(1 / square root of 2 i + 1 / square root of 2 k), find the electric flux through a circular disk of radius a lying flat in the x-y plane. Orient the disk so that the positive direction is toward positive z.
Homework...
Homework Statement
A charge Q is located inside a rectangular box. The electric flux through each of the six surfaces of the box is: Φ1=+1500 Φ2=+2200 Φ3=+4600 Φ4=-1800 Φ5=-3500 Φ6=-5400.
(unit: N x m^2/C)
What is Q?Homework Equations
ΦE =Q/ε
The Attempt at a Solution
Add up all the Φ's to...
I have a figure showing two dipoles each having a Q and -Q charge with distance d separating the positive and negative of each dipole. The dipoles are then surrounded by multiple closed surfaces. I need to match fluxes of 8pikQ, 4pikQ, -8pikQ, - 4pikQ and 0 to these surfaces.
Gauss' Law...
Homework Statement
24.9 A cone of base radius R and height h is located on a horizontal table, and a horizontal uniform electric field E penetrates the cone, as shown here. Determine the electric flux entering the cone.
You can actually view the question and solution at...
Hello, if we have an electric field E parallel to X axis and a semisphere with axis parallel to X axis, which is the electric flux through the semisphere?
My problem is this,
Find the electrix flux through the top side of a cube. The cube's corner is on the origin, and is 'a' units on length. The charge 'q' is located at the origin, with the corner of the cube.
I am thinking I need a double integral. One to swipe the box in the y direction...
A uniform field E is parallel to the axis of a hollow hemisphere of radius R. a) What is the electric flux through the hemispherical surface? b) What is the result if E is instead perpendicular to the axis?
Here is what I've interpretted so far. If the field is parallel to the surface, then...
Question:
The cube in the figure (attachment) has sides of length L=10.0 {\rm cm}. The electric field is uniform, has a magnitude E=4.00 \times 10^{3} {\rm N}/{\rm C}, and is parallel to the xy-plane at an angle of 36.9^\circc measured from the + x - {\rm axis} toward the + y - {\rm axis}...
The non uniformity of the electric field in the following question is throwing me off. If the electric field were uniform I'd have no problem.
I assume I would use the following equation to solve for each of the surfaces:
\Phi = \int \vec{E} \cdot d \vec{A}
I'm having a difficult time...
I got a cube withe edge length 1.4m and has a uniform electric field, i have to find the electric flux throught the right face for the following fields.
A) 2.00i
B)-3.00j
answer for a) is 0, i think because its uniform and all the inward and outward contribuitions cancel but then why...
The electric flux, by a definiton, is the number of electric field lines per unit area. Yet, when we apply gauss' law for a 1 Coulumb charge, we get a non-integral value. What then, is the physical Significance of the value we get?
I know I'm reposting this... but no one seems interested in my thread.. maybe becuase it already has replies (which doesn't mean its been solved!) but whatever
cube is placed with its edge at (0,0,0) as in the diagram. The sides of the cube are1 .4m. Find the electric flux and the charge...
i know that the flux through a sphere with a point charge at the center is non-zero \left( \frac{q}{\epsilon_0}\right) but if I wanted to calculate this using Guass's law I would take the divergence of E=\frac{q}{4\pi\epsilon_0r^2}\hat{r} which is 0 so I would get the flux to be 0. What am I...
At each point on the surface of the cube shown in Figure 23-27, the electric field is parallel to the z axis. The length of each edge of the cube is 4.0 m. On the top face of the cube E = -40 k N/C, and on the bottom face of the cube E = +29 k N/C. Determine the net charge contained within the...
Hello everyone. I'm having troubles figuring out part 2 of this problem, and also can u see if i did part 1 correctly? To me it looks like the flux is going to be equal, if the E-field is in the i direction or in the z direction but somthing tells me how can the angle be the same in both...
I'm having troubles understanding what's going on here, with the integration. Here is the integral through the right face of the cube.
I don't know how to insert all the fancey symbols, so here is my key:
S = integral symbol
Flux = electric flux symbol, omega or somthing, a circle with a...
Hello Group Members :smile:
I was needing some candid explanation or guidance on what are similarities and differences between magnetic flux and electric flux.
One thing I know of is that magnetic flux acts on ferromagnetic material whereas Electric flux acts on any oppositely charged...
I used the formula (E * Area * cos(theta)) and got the wrong answer (.02529) and I really don't understand why. I need help
The square surface shown measures 4.0 mm on each side. It is immersed in a uniform electric field with magnitude E = 1930 N/C. The field lines make an angle of 35° with...
In a singular dimension case, can you say that the Flux is equal to the charge enclosed, or does it have to be the charge enclosed divided by the permitivity.
My lecturers notes claim that Flux = Q {in the electrostatic case} in one dimension.
Is that true?
EDIT sorry its not singular...
I've been thinking about this problem for a while now, and I can't get it to work out. A 9.6X10^-6 C point charge is at the center of a cube with sides of length .5m What is the electric Flux through one of the six faces of the cube? I know the answer is 1.81X10^5 but I can't figure out how to...
Question 1: A 2cm x 3cm rectangle lies in the xz-plane. What is the electric flux through the rectangle if
E=(50i+100k) N/C
and
E=(50i+100j) N/C
Question 2:
A 1cm x 1cm x 1cm box is between the plates of a parallel-plate capacitor with two faces of the box perpendicular to E ...
This is a proof type problem from our E&M class. We are given a point charge Q, let say that it is at the origin. We then have a disk parallel to the xy plane, with center a distance b from the origin( on the z axis) & radius R. We are to prove that if 1/4 of the flux passes thru the disk, prove...