Electric field lines Definition and 84 Threads

Homework Statement List the 4 properties and characteristics of electric field lines. Homework Equations I was not able to get them all and the ones that I did get I am confused that if it is really a characteristic or a property The Attempt at a Solution 1. Characteristic...

Which, if any, of the following statements about electric field lines is/are true? The electric field is always perpendicular to the surface outside of a conductor. - TRUE It is not possible for the electric field to ever be zero. - FALSE It is possible for two electric field lines to...

Hey all. I was wondering what the interaction between Electric and Magnetic field lines are. For example, when you hold up a magnet against a charged electrode. I tried searching in google, but everything just turned up one or the other or how a moving charge makes a magnetic field and etc.

Homework Statement The adjacent figure shows the E-field lines (with arrows) and equipotential contours for a certain charge configuration. Determine for each of the following statements whether it is true or false. Assuming that these contours are those of a point charge at the origin...

Homework Statement Why are electric field lines also referred to as "lines of force"?

Imagine an electron in uniform motion moving at a speed near the speed of light. Pictures I've seen of the electric field around such a charge look like this one from wikipedia: The field lines are straight, but clustering around the plane perpendicular to the direction of motion...

If a time varying magnetic field of infinite dimensions crosses a plane at right angles what can we expect induced electric field lines to look like? Straight lines with direction determined by the right hand rule?

1. The problem statement The electric field E (arrows) is produced by a point charge. Find R in meters Homework Equations E(due to pt charge) = kq/R^2 # of field lines/unit area represents relative field strength (only statement in my notes that seems to apply to problem) The...

Hi, I am trying to get a better idea of how E-field line diagrams are drawn. The following link appears to be a nice example of field lines associated with a single charge moving linearly with constant velocity [v=0.5c]. By default, after pressing go, the animation displays the field lines for...

Homework Statement This is a question I read in an article that discusses about misconception of physics among students. they only provided the question and some of the wrong principles students suggested. Three Points , located on the vertices(vertexes) of an equilateral triangle and have...

I have an intuitive understanding of electric fields but when it comes to defining it on a test I wouldn't know what to say. Is the electric field defined as the force produced by a charged object on a positive test charge or any other charged object? Also if you were told to draw the electric...

I understand the concept of electric field lines but don't understand the interaction with the equipotential lines. I understand that along each equipotential line/surface that there is no change in potential energy. I also understand the field lines need to cross perpendicularly with the...

Homework Statement A positive charge is placed in the center of a cube. Are the intersections of the field lines with a side of the box uniformly distributed across that side. Explain. === I have missed some lectures due to getting the swine flu (ugh) and the material is not exactly...

Homework Statement The electric field from two charges in the plane of the paper is represented by the dashed lines and arrows below. Select a response for each statement below. (Use 'North' towards top of page, and 'East' to the right) The force on a (-) test charge at N is directed...

I'm have some conceptual problems with electric fields and waves. When I think of electromagnetic waves I imagine field lines emanating from a charge that is oscillating, consequently causing the field lines to oscillate. In diagrams showing field lines, the electric field runs parallel with the...

Homework Statement an electric field line emerges from a positive point charge +q1 at an angle x to the straight line joining it to a negative charge -q2.at what angle y will the field line enter the charge -q2? Homework Equations The Attempt at a Solution sin(y/2)=sin(x/2)(q1/q2)^1/2

Homework Statement (i) Explain why it would not be possible to write the magnetic Field (B-field) in terms of a vector potential (A) IF magnetic monopoles existed. (ii) For an electrostatic field (E-field), define the electrostatic potential (Fi), and explain CONCISELY what is meant by a...

Homework Statement Hey I'm supposed to draw electric fields for this problem and I can't figure these 2 out. Homework Equations There really isn't any. The Attempt at a Solution It's included in the picture http://img135.imageshack.us/my.php?image=physicsge1.jpg

Homework Statement You have two metal electrodes, not touching each other. One is a circle and one is like a thin plank. The plank is at a lower electric potential. Draw electric field lines between them, including direction. Draw equipotential lines in the space between the electrodes...

Homework Statement Sketch a field line picture for a circular arc with a uniform linear charge density. Homework Equations The Attempt at a Solution To do this do I just break up each segment on the arc into small segments each of charge dQ and draw the field line along the...

I am asked to draw a picture of a person 1 second before patient is defibrillated and 10 seconds after a patient is defibrillated. I am asked to draw a general picutre of the electric field lines and charges at these two points. I know that the goal of defibrillation is to enterfere with the...

Hi all, I am trying to solve numerically as well as model the electric field lines coming out of a electrode (not a point charge) in a dielectric medium. ANy suggestions would be greatly beneficial _________________________________________________ _ separated by d + separated by d _...

Hi all, I am trying to solve numerically as well as model the electric field lines coming out of a electrode (not a point charge) in a dielectric medium. ANy suggestions would be greatly beneficial _________________________________________________ _ separated by d...

Homework Statement Magnetic and electric field lines are visually defined by field lines. Give three points to explain how the field lines can be used to describe the characteristics of these fields. Homework Equations (Not sure if needed to describe) Fm = qvBsin0, Fm = IlBsin0 The...

Hello Everyone! i need some guide and hints about this... Here is the link for the picture... From the figure, the electric Field lines arising from two charges Q1 and Q2 are shown. From this drawing we can see that A) The electric field could be zero at P2 B) Both Q1 and Q2 have the...

Homework Statement a) Sketch the electric field pattern setup by a postively charged hollow sphere. Include regions inside and regions outside the sphere. b) A conducting cube is given a positive charge. Sketch the electric field pattern both inside and outside the cube. The Attempt at a...

Does anyone know a good site where they show you examples of how to draw Electic Field lines? Problem relating to it: a) sketch the electirc field pattern set up by a positively charged hollow sphere.

I know that the electric field lines between two oppositely charged points are symmetric, but I can't seem tof ind any refrence as to when this symmetry breaks down. I want to say that electric field lines do not maintain symmetry if the two charges are not equal but opposite, e.g. a -4 and...

Windows Sofware To Graph Electric Field Lines ?? Hi Everyone, Does anyone know of any Windows software out there that will graph electric field lines? I recently did a physics lab where I determine point charges of some "x-rays" and from the data I gathered I need to graph the electric...

Could anyone pls explain to me: what is the similar thing among points in the same Electric Field Line? (I have 2 particles A and B which are + and -, then I have 2 other ones C and D --> how can I know that C and D are lying in 1 EF line or in 2 different lines?) Thx so much.

Why are electric field lines always crossing equipotential lines at right angles? Can somebody please explain this to me? Thanks :smile:

Why are electric field lines always crossing equipotential lines at right angles? Can somebody please explain this to me? Thanks :smile:

the concept of electric field lines are came into existence to satisfy the special theory of relativity which implies that action of electrostatic forces can not be instantaneous but takes some time to act on teh other charge i.e. if a charge produces an electric field then its effect will be...

Can anyone help me to understand why equipotential surfaces must always be perpendicular to the electric field lines that pass through them? My textbook gives what seems to be a simple mathematical explanation, but the logic is escaping me. It states that dV= -E.ds = 0, (where the "."...