Electric field inside hollow dielectric field

AI Thread Summary
The electric field inside a hollow dielectric sphere is zero when there is no charge present within the sphere. If the sphere is charged, the distribution of that charge—whether on the surface or uniformly throughout—affects the electric field. Without specific information about the charge distribution, it is impossible to determine the electric field inside the sphere. The key takeaway is that the electric field is influenced by the charge configuration. Understanding these principles is essential for solving related problems in electrostatics.
-EquinoX-
Messages
561
Reaction score
1

Homework Statement


How do I proof that the Efield inside a hollow dielectric sphere is 0?


Homework Equations





The Attempt at a Solution

 
Physics news on Phys.org
Unless we know how the dielectric sphere is charged, ( whether the charge is on the surface of the sphere or distributed uniformly through out the sphere ) it is not possible to find the field inside the sphere.
 
I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
Thread 'A cylinder connected to a hanging mass'
Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
Back
Top