charge

  1. muon

    varying vev for a scalar field of complex charge, such as as the Higgs field

    Here is some background for my question, which is as I currently understand it (meaning, it may be wrong): In a self-interacting scalar field, the formula for potential energy can be given as (μ^2 * (Φ^2)/2) + (λ * (Φ^4)/4). In a field with an imaginary value for μ, μ^2 becomes negative...
  2. I

    Build up magnetic charge on skin?

    Hi, I'm wondering if it's possible to attach two electrodes to my skin, about an inch apart from one another, and somehow flow current between the two so that that length of skin builds up sufficient magnetic charge to be attracted to a nearby (e.g., within 1 inch of skin) magnet. My goal is...
  3. neila9876

    Charge moves relative to charge: one thing two aspects?

    1. Two neutral balls move relative to each other (one thing). When the frame of reference is established on the left ball, the right ball is moving (one aspect). When the frame of reference is established on the right ball , the left ball is moving (another aspect). In respect of...
  4. H

    X4 Model of Unit Electrical Charge

    Declarations: This X4 model of unit electrical charge is established in X4 theory and contains some guess of its own. Anybody shall not try to relate other similar theory to it. The major purpose of this model is to explore the logical relationship between chirality, space and charge, anybody...
  5. TyrannosaurusWreck

    Charge Problem

    I had the problem: An iron arrowhead has an initial charge of 3.35e−6 C. How many electrons are required to give it a charge of −2.82 μC? This was my attempt- 1) -2.82μC= -2.82e-6 C 2) q=+/- Ne 3.35e-6= N(1.6e-19) 3) N= 3.35e-6/1.6e-19 = 2.09e13 4) -2.82e-6= N(-1.6e-19) 5) N=...
  6. V

    Finding Charge given expression for Electric Potential

    Hi, I'm having some trouble with a problem I have regarding electric potential. I'm given the equation for the electric potential everywhere on the xy plane. V=(22/√((x+1.54)^2+y^2))-(38/√(x^2+(y-2.77)^2)) There are two particles which I need to find the charge and coordinates for. I...
  7. K

    Gauss's Law for an offset (non-origin) charge.

    Can anyone see where I have gone wrong here? This is just a problem I made up for myself and I almost got it to come out but not quite. According to Gauss's Law I should get \frac{Q}{\epsilon_0} but it doesn't quite come out. I have a charge q offset a distance a_x along the x...
  8. J

    Conducting shell charge

    I'm looking at the charge and field lines created in and around a conducting sphere that encloses a net charge that is NOT centered in the shell. I understand how the electric field acts outside the sphere-as though all the charge was centered in the sphere. I also understand that the sphere...
  9. O

    charge inside the conductor

    what does it exactly mean " charge enclosed by conductor" ? Whereas we know that charges only resides on the surface of the sphere.
  10. T

    How volume charge density can be zero?

    We see in the Laplace equation (del^2)V=0 only if volume charge density is zero. But electric field intensity(E) is not equal to zero. What can be the physical situations to satisfy this equation.?
  11. kelsiu

    Charge accumulated at two ends of resistor/inductor?

    In a simple circuit are there any charges accumulated at two ends of resistor? There is an conservative and thus electrostatic electric field and potential difference across the resistor. It seems it is only possible if positive and negative charges are accumulated at two ends to provide the...
  12. P

    charge of particles (an easy problem)

    Hi, This problem is a-little basic for this forum, but can you assist with the following (refer to attachment). I've sketched out how I think the particles will behave, given a -2Q particle interacts with the +ve particles. But my problem is, if the particles of opposite charge are touching...
  13. J

    Point Charge and Infinite Wire

    Hello, I am new in this forum and I am having problems solving the following question: Statement: A long straight and thin wire has a charge Q per unit length. It is also carrying a current I. A point charge is moving with a velocity v parallel to the conductor, at a distance d from it...
  14. E

    Which factors change electrostatic force?

    I have measured the electrostatic force between an earthed plate and charged sphere, then varied the separation between them. I plotted a graph of this variation with separation (attached). The dashed line shows where the points should lie. Does anyone have any suggestions as to why my graph...
  15. A

    Medium surrounding a van de graaff generator

    According to wikipedia the maximum achievable potential of a van de graaff generator= dielectric strength of the surrounding gas * radius of the sphere. what if the surrounding to the sphere is not a gas, but a liquid, will anything change?
  16. P

    The relation of colour charge to electric charge

    The relation of colour charge to electric charge Dirac has shown how the Klein-Gordon equation can be factored into two linear parts using 4x4 Dirac gamma matrices. [Dirac, P.A.M., The Principles of Quantum Mechanics, 4th edition (Oxford University Press) ISBN 0-19-852011-5] (E/c)^2 - P^2 -...
  17. S

    Electric field at center of a disk

    We've just begun electrostatics in school. I can't seem to understand why the field at the center of a uniform charged disk is not equal to zero. We found the formula for its field by assuming the disk to be made up of charged rings and then integrating it. The field at the center of a ring is...
  18. B

    How to calculate charge with a given potential?

    Hi! An iron plate with a mass of 1 kg surrounded by vacuum is charged with an initial potential of +20 kV. How do I calculate the charge, Q, that the iron plate will get? The source potential is kept constant at +20 kV in relation to something neutral, but of course the potential between...
  19. J

    What's the electric field with a point charge not in the center of the sphere?

    That's a hollow conducting sphere link img: http://i.stack.imgur.com/dXzo8.png My charge is at P (10uC). R = 0.15m. PS = 0.05m. DS = 0.35m. What's the electric field at point D?
  20. M

    Electricity Charge Problem

    Question: Two identical conducting spheres are held in a firmly in a fixed position at a distance D apart from each other. The charge on the first sphere is +3Q. The charge on the second sphere is +7Q. The electrostatic force between the two spheres is given as 42.0 Newtons. Now, suppose a...