Calculation of potential of an grounded sphere ball with charges

AI Thread Summary
The discussion revolves around calculating the electric potential outside a grounded conductor sphere with a point charge inside its cavity. The user initially concludes that the electric field and potential are zero based on Gauss's law but questions this outcome due to subsequent related questions. There is a request for clarification on the mistake in their reasoning or figure. The conversation highlights the complexities of grounding and charge distribution in conductors. Understanding the implications of grounding on electric potential is crucial for solving the problem correctly.
henry407
Messages
21
Reaction score
0

Homework Statement


Consider an originally neutral conductor sphere of radius R with a cavity and a point charge Q1 inside the cavity.
(a)The conductor is grounded. Find the electric potential outside the conductor and the total charge on the conductor.

Homework Equations



The Attempt at a Solution


As shown on the figure I draw, I conclude that the E-field and the potential is zero by gauss law. Somehow, I think that is not possible as this question is followed up by 3 other questions which related to its potential. I hope someone could point out the mistake of the figure. Thanks a lot~
 

Attachments

  • ???.png
    ???.png
    3.4 KB · Views: 414
Last edited:
Physics news on Phys.org
Help~
 

Thread 'Rolling without slipping on a curved surface'

Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
View full post »
Thread 'Trying to understand the logic behind adding vectors with an angle between them'

Thread 'Trying to understand the logic behind adding vectors with an angle between them'

My initial calculation was to subtract V1 from V2 to show that from the perspective of the second aircraft the first one is -300km/h. So i checked with ChatGPT and it said I cant just subtract them because I have an angle between them. So I dont understand the reasoning of it. Like why should a velocity be dependent on an angle? I was thinking about how it would look like if the planes where parallel to each other, and then how it look like if one is turning away and I dont see it. Since...
View full post »
Thread 'Correct statement about a reservoir with an outlet pipe'

Thread 'Correct statement about a reservoir with an outlet pipe'

The answer to this question is statements (ii) and (iv) are correct. (i) This is FALSE because the speed of water in the tap is greater than speed at the water surface (ii) I don't even understand this statement. What does the "seal" part have to do with water flowing out? Won't the water still flow out through the tap until the tank is empty whether the reservoir is sealed or not? (iii) In my opinion, this statement would be correct. Increasing the gravitational potential energy of the...
View full post »

Similar threads

Electric field external to Conducting Hollow Sphere with charge inside
Replies
23
Views
3K
The electric potential inside a conducting sphere with charge Q
Replies
11
Views
2K
Induced charge on a conducting sphere sliced by a plane
Replies
2
Views
1K
Use of imaginary charge vs Gauss' law
Replies
12
Views
969
Electromagnetic field theory -- Potential inside a conducting sphere
Replies
9
Views
107
Charge rearrangement on conducting spheres
Replies
21
Views
4K
Why Is Work Positive When Done Against the Electric Field?
Replies
22
Views
3K
Work done to insert a point charge 𝑞 at the center of a conducting sphere
Replies
12
Views
1K
Charge on a grounded conducting sphere in a uniform electric field, after ungrounding and movement
Replies
1
Views
1K
Point charge in cavity of a spherical neutral conductor
Replies
8
Views
4K

Hot Threads

Recent Insights

Back
Top