# Problem in finding the electric field()

• vchris5
In summary, the electric field is a physical quantity that describes the electric force experienced by a charged particle at a given point in space. It is calculated using different equations, including E = F/q and E = kQ/r^2, depending on the situation. Finding the electric field can be challenging when dealing with complex charge distributions, but it is crucial for understanding the behavior of charged particles and has many practical applications. Some factors that affect the electric field include distance from the source charge, magnitude of the source charge, presence of other charges, and the medium in which the field exists.
vchris5
Consider a, practically,infinite metallic conductor in which inside there is a spherical cavity with radial R. At the paries there is a surface allocation of electric brunt with a surface density: σ(θ)=σοcosθ .
θ: polar angle at teh system of spherical coordinates with the center at the center of cavity.
Find the electric field at each point of the cavity.

attempt to solution?

malawi_glenn said:
attempt to solution?

Inside the conductor, the electric field it's zero.
I think inside the cavity the field is zero
And at the surface of the cavity how can I work?

Last edited:

## What is the electric field?

The electric field is a physical quantity that describes the electric force experienced by a charged particle at a given point in space. It is a vector quantity, meaning it has both magnitude and direction.

## How is the electric field calculated?

The electric field is calculated using the equation E = F/q, where E is the electric field, F is the electric force acting on a charged particle, and q is the charge of the particle. It is also sometimes calculated using the equation E = kQ/r^2, where k is the Coulomb's constant, Q is the source charge, and r is the distance from the source charge.

## What is a problem in finding the electric field?

One common problem in finding the electric field is dealing with complex charge distributions. In such cases, the electric field must be calculated by breaking down the charge distribution into smaller, more manageable parts and then using the principle of superposition to find the total electric field.

## Why is finding the electric field important?

Finding the electric field is important in understanding and predicting the behavior of charged particles in an electric field. It is also crucial in many practical applications, such as designing electronic devices and analyzing the behavior of electrically charged substances.

## What factors affect the electric field?

The electric field is affected by several factors, including the distance from the source charge, the magnitude of the source charge, and the presence of other nearby charges. The medium in which the electric field exists can also affect its strength and direction.

Replies
2
Views
998
Replies
4
Views
2K
Replies
7
Views
1K
Replies
4
Views
3K
Replies
26
Views
4K
• Introductory Physics Homework Help
Replies
23
Views
968
• Electromagnetism
Replies
14
Views
1K
Replies
2
Views
12K
• Introductory Physics Homework Help
Replies
9
Views
462
• Electromagnetism
Replies
48
Views
3K