How Does Charge Affect Electric Field in Spherical Shells?

In summary, a conducting spherical shell is a hollow, spherical object made of a conductive material used in physics experiments to study electric fields. It differs from a solid spherical object in that it is hollow and has no internal material, allowing for a more uniform distribution of charges. Its purpose in experiments is to provide a symmetrical shape for more controlled and observable electric forces. The electric field inside a conducting spherical shell is not affected by charges on the surface due to the free movement of charges within a conductor. Real-life applications include the use of Faraday cages for protection from external electric fields and in electrostatic spray painting for a more even coating.
  • #1
Hooke's Law
30
0

Homework Statement


What is the electric field if r=a and r=b?
Reference:http://www.youtube.com/watch?v=BcuQ2c_WrMc"

2:11

And what if the net charge is just -Q on the conductor instead of -3Q? Will the electric field at r>b be 0?
Reference: Same video, 3:00-3:10

Homework Equations



Flux = E*A = q/ epsilon0
 
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  • #2
Hello Hooke's_Law.

Yes, then E=0 for r>b .
 

1. What is a conducting spherical shell?

A conducting spherical shell is a hollow, spherical object made of a conductive material, such as metal. It is often used in physics experiments to study the behavior of electric fields, as the spherical shape allows for a more uniform distribution of charges on the surface.

2. How is a conducting spherical shell different from a solid spherical object?

A conducting spherical shell differs from a solid spherical object in that it is hollow and has no internal material. This allows for the charges to distribute evenly on the surface, whereas in a solid object, the charges would be concentrated at the center.

3. What is the purpose of a conducting spherical shell in experiments?

The conducting spherical shell is often used in experiments to study the behavior of electric fields. Its symmetrical shape allows for a more controlled and uniform distribution of charges, making it easier to observe and measure the effects of electric forces.

4. How is the electric field inside a conducting spherical shell affected by the charges on the surface?

The electric field inside a conducting spherical shell is not affected by the charges on the surface. This is due to the fact that the electric field inside a conductor is always zero, as the charges can freely move and redistribute in response to external electric forces.

5. Are there any real-life applications of a conducting spherical shell?

Yes, there are several real-life applications of a conducting spherical shell. One example is a Faraday cage, which is a conducting shell used to block external electric fields and protect sensitive electronic equipment. Another application is in electrostatic spray painting, where a conductive spherical shell is used to evenly distribute the paint particles for a more uniform coating.

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