Recent content by yiuyan

Thanks for your answers merryjman, and for taking the time for the sketch. I agree with you that from a very far distance, the E-field would be as if they originated from a point charge. But I can't see how the E-field inside the hollow can be horizontal. I've made another sketch, a rather...

Sorry if I mis phrased my question. I had the idea of getting the E-field in the hole too, what I'm having trouble over is how it looks like. I tried drawing the lines of the big sphere, and the lines of the smaller one and adding them up vectorially, but it was tedious and beyond me. It is...

Here is one I've drawn. Sphere with radius R has a smaller hollow sphere inside with radius r (r<R). The distance between their centers is L, and the bigger sphere has uniform charge density rho. How is the E-field inside the hollow like?

Sorry I can't really see how Gauss' Law would come in handy in this case. Correct me if I'm wrong, but what Gauss' Law relates is the net flux that comes out of the Gaussian surface is proportional to the magnitude of charge enclosed. It doesn't say anything about the direction or strength of an...

Thank you for the prompt reply, but I don't really understand it. How does superimposing a sphere of opposite charge density changes things? Gauss Law is concerned with the charge a surface encloses; if the charges cancel out eventually, there shouldn't be a difference right. Also, if Gauss...

Homework Statement Hi, imagine an insulating uniformly charged sphere. Its electric field points from the center outwards radially. Now cut out another smaller sphere from inside, such that their centers do not coincide. What is the electric field inside the hollow like? Homework...

It seems to me that there are not enough information to solve the question. A maxima is formed from a double slit when the difference between the distance from each slit to a point is a multiple of the wavelength. If the light is coherent and basically the same, there should be a zeroth order...