Solve Electrostatics MCQ with Explanation

  • Thread starter Thread starter Rajat jaiswal
  • Start date Start date
  • Tags Tags
    Electrostatics
AI Thread Summary
When a net charge is given to a solid insulating sphere, the charge will remain in the location where it was applied, as insulators do not allow free movement of charge. The charge may be distributed uniformly within the volume of the sphere, but it does not have to be, unlike conductors where charge redistributes uniformly on the surface. The distribution of charge on an insulating sphere does not depend on the presence of external charges, as insulators do not respond to them in the same way conductors do. Therefore, the correct answer to the MCQ is that the charge may be distributed uniformly in its volume. Understanding the differences between insulators and conductors is crucial for solving electrostatics problems effectively.
Rajat jaiswal
Messages
4
Reaction score
0
Friends,
Can anyone solve this mcq on electrostatics with proper explanation
If a net charge is given to a solid insulating sphere then:
a. it must be distributed uniformly in it's volume
b. it may be distributed uniformly in it's volume
c. must be distributed uniformly on its surface.
d. The distribution would depend on whether other charges are present or not.

Thank you.
 
Physics news on Phys.org
Rajat jaiswal said:
Friends,
Can anyone solve this mcq on electrostatics with proper explanation
If a net charge is given to a solid insulating sphere then:
a. it must be distributed uniformly in it's volume
b. it may be distributed uniformly in it's volume
c. must be distributed uniformly on its surface.
d. The distribution would depend on whether other charges are present or not.[that means on the surface of the sphere]

Thank you.

hey Rajat jaiswal,
do you know what’s the difference between an insulator and a conductor when they get electrostatically charged? if you do, then try to read the question again and focus on those underlined words [key words], you would know the answer easily.
 
Rajat jaiswal said:
Friends,
Can anyone solve this mcq on electrostatics with proper explanation
If a net charge is given to a solid insulating sphere then:
a. it must be distributed uniformly in it's volume
b. it may be distributed uniformly in it's volume
c. must be distributed uniformly on its surface.
d. The distribution would depend on whether other charges are present or not.

Insulators are substances which impede the free flow of electrons from atom to atom and molecule to molecule. If charge is supplied to an uncharged insulator at a point, it will tend to remain there.

The presence of other charges outside a conductor will result in induced charges being produced on the surface of the conductor because the free electrons can move inside the conductor. What do you feel will happen in the case of an insulator?
 
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