Electric fields true or false question

AI Thread Summary
The electric fields produced by a point charge, a conducting sphere, and an insulating sphere are not identical when measured outside the spheres, despite having the same charge. The key difference lies in how the charge is distributed; conducting spheres allow charges to move freely, while insulating spheres do not. This affects the electric field's magnitude and direction at a distance r from the center. The question seeks clarification on the field's characteristics outside a uniformly charged hollow shell. Understanding these distinctions is crucial for accurate analysis of electric fields.
simsima_1
Messages
1
Reaction score
0

Homework Statement



The electric fields created by a point charge, a conducting sphere and insulator sphere are identical, if they all have the same amount of charge and the field is measured outside the spheres.



Homework Equations





The Attempt at a Solution



I think its false...but how can you explain it
 
Physics news on Phys.org
What is the field (magnitude and direction) at a point, at a distance r from the centre, outside a uniformly charged hollow shell of infinitesimal thickness, if the total charge is q?
 
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