Electric Field Above a Charged Circular Disk

  • Thread starter nibal
  • Start date
In summary, the question is asking for the electric field at a distance z above the center of a flat circular disk with radius R and uniform surface charge (sigma). The solution involves finding the electric field produced by an element of charge using integration, only considering the z-component due to symmetry.
  • #1
nibal
2
0
Hello guys,
I have a problem with actually starting up this problem (2.6) in "Intrroduction to electrodynamics" Griffiths.

Question

Find the electric field a distance z above the center of a flat cricular disk of radius R, which carries a uniform surface charge (sigma)?

I am having problems setting it up especially how 'da' looks like and also the whole integral.

Thanks.
 
Physics news on Phys.org
  • #2
Find the electric field produced by an element of charge [itex]\sigma \rho d\rho d\theta[/itex] at a position along the z-axis. You only need to consider the z-component of field due to the symmetry. Then it's just a matter of integration.
 
Last edited:
  • #3
Thank you i get it now Tide.
 

What is electrostatics?

Electrostatics is the study of electric charges at rest, and the forces and fields associated with them.

What is an electric charge?

An electric charge is a fundamental property of matter that causes it to experience electrical forces. There are two types of charges: positive and negative.

What is Coulomb's Law?

Coulomb's Law states that the force between two charged particles is directly proportional to the product of their charges and inversely proportional to the square of the distance between them.

What is an electric field?

An electric field is a region of space around a charged object where another charged object will experience a force. The strength of the field is determined by the magnitude and direction of the charges creating it.

What is the difference between conductors and insulators?

Conductors are materials that allow electric charges to move freely, while insulators are materials that do not allow charges to move easily. This is why conductors are used to carry electricity, while insulators are used to prevent electricity from flowing.

Similar threads

Replies
8
Views
1K
Replies
22
Views
750
  • Electromagnetism
Replies
3
Views
719
  • Introductory Physics Homework Help
Replies
4
Views
1K
  • Electromagnetism
Replies
1
Views
837
  • Electromagnetism
Replies
5
Views
1K
Replies
14
Views
1K
Replies
3
Views
680
Replies
14
Views
1K
Replies
8
Views
1K
Back
Top