Continuous Charge Distribution: Symmetry & Meaning

In summary, in the context of electric fields, a continuous charge distribution refers to the charge being spread out over a region or volume of space rather than being localized at specific points. This is in contrast to a discrete charge distribution where the charge is concentrated at one point or on a collection of particles. The term "continuous" is used to describe this distribution as it implies a smooth and uninterrupted spread of charge.
  • #1
wajed
57
0
In the Electric field of a Continuous Charge Distribution, what is "conti.." exactly?

-I know its the "distribution"! but I`m asking about, like, how would the "distribution" be continuous?
-I think the word "symmetry" should be used?
-why is the word "continuous" used?
 
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  • #2


In a continuous charge distribution, the charge "fills up" a region or volume of space.

Contrast that with a discrete charge distribution, where the charge might be localized at one single point, or on a collection of point particles.
 
  • #3


If you have say a current of 10^9 electrons per second (160 picoamps) flowing in a circuit, this is usually consideded to be a continuous current although the signal is comprised of discrete particles. However, if you have a bandwidth of 1 GHz (1 nanosec), there are only about 160 discrete electrons contributing to your signal. There is a Gaussian distribution of electrons in each sample period, leading to a signal fluctuation +/- sqrt(160), called shot or Schottky noise.
 

1. What is continuous charge distribution?

Continuous charge distribution refers to the distribution of electric charges over a continuous region, as opposed to a discrete set of charges. It is often represented by a charge density function that describes the amount of charge per unit volume or unit area at any given point.

2. What types of symmetry can continuous charge distributions exhibit?

Continuous charge distributions can exhibit different types of symmetry, such as spherical, cylindrical, or planar symmetry. These symmetries refer to the shape of the distribution and the fact that it remains unchanged when rotated or reflected along certain axes or planes.

3. How is the electric field calculated for a continuous charge distribution?

The electric field for a continuous charge distribution can be calculated using Coulomb's law, which states that the electric field at a point is equal to the sum of the electric fields produced by all the individual charges in the distribution. This can be represented mathematically as an integral over the charge density function.

4. What is the significance of continuous charge distribution?

Continuous charge distribution is a useful concept in physics and engineering as it allows for the analysis and prediction of electric fields and other related phenomena in systems with varying charge densities. It also helps in understanding the behavior of electrical devices and circuits.

5. Can continuous charge distribution exist in real-world scenarios?

Yes, continuous charge distributions can exist in real-world scenarios. For example, the Earth's atmosphere can be considered a continuous charge distribution as it contains a varying amount of charged particles, such as ions and free electrons, that influence the electric field in the atmosphere. Similarly, any object with a non-uniform distribution of charges can also be treated as a continuous charge distribution.

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