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In electromagnetism, charge density is a measure of electric charge per unit volume of space, in one, two or three dimensions. More specifically: the linear, surface, or volume charge density is the amount of electric charge per unitlength, surface area, or volume, respectively. The respective SI units are C·m−1, C·m−2 or C·m−3.[1]
Like any density, charge density can depend on position, but because charge can be negative - so can the density. It should not be confused with the charge carrier density, the number of charge carriers (e.g. electrons, ions) in a material per unit volume, not including the actual charge on the carriers.
In chemistry, it can refer to the charge distribution over the volume of a particle; such as a molecule, atom or ion. Therefore, a lithium cation will carry a higher charge density than a sodium cation due to the lithium cation's having a smaller ionic radius, even though sodium has more electrons (11) than lithium (3).
Lesly Jaskolski
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What is the unit of volumetric density?
Volumetric density is the density based upon the volume of an object.
Given that gold is a univalent metal with a molar mass of 197 grams per mol and a density of 19.3 grams per cc how can the density of the charge carriers be calculated?
The density of the of the charge carries can be calculated is by doing 197 grams times 19.3 grams and see what you get as you done calculating .
How do bonded atoms become partially charged?
Due to the difference in the electronegativities of the bonded atoms, the more electronegative atom attracts the shared pair of electrons towards itself, which increases the negative charge density around the attracting atom, consequently the other atom has less negative charge density and thus a positive charge density (relatively positive) gets generated at the donor atom.
Why does osmium has the greatest density?
Osmium has the greatest density (of any stable element) - this is due to Lanthanide Contraction, where poor shielding of nuclear charge results in decreased atomic radius.
Is lithium corrosive?
yes it is the most corrosive metal known to man due to its high charge density
What is the charge density for a conductor?
The charge density inside a conductor is always zero
The relative distribution of charge density on the surface of a conducting solid depends on what?
the density of the conductor
What is the unit of volumetric density?
Volumetric density is the density based upon the volume of an object.
What is the physical meaning of charge density on lines or on areas?
Every object consists of a certain amount of positive charge and a certain amount of negative charge. For neutral objects, the amount of each type of charge is equal in every tiny, or infinitesimal, portion of the object. If the object has the shape of a line, the amount of positive charge in each tiny segment of length along the line is equal to the amount of negative charge in each tiny segment of length. For a neutral three-dimensional object, such as a cube, the amount of negative charge in each small volume element of the total volume of the cube is equal to the amount of positive charge in each small volume element. All neutral objects have a charge density of zero throughout their volumes despite the fact that they have charge. The charge density describes the amount of excess charge per given region of space. For objects that are not neutral, then, the charge density is either positive or negative. A positive charge density expresses the fact that an object has a given amount of positive charge more than it has negative charge in a specific region of space. Likewise, a negative charge density means the object has a given amount of negative charge more than positive charge for a given region of space. For a line of charge, the charge density is expressed as Coulombs per meter when using SI units. For a two-dimensional object, such as a disk, the charge density using SI units is Coulombs per (meter^2). For objects that have uniform excess charge throughout their volume, the charge density is expressed as the total amount of excess charge on the body divided by the total length/ area/ volume of the body. For objects that have nonuniform charge excesses, the charge density must be expressed as a function of position (and possibly, time) within the object.
What is the Difference between line charge density and surface charge density?
The electric field of an infinite line charge with a uniform linear charge density can be obtained by a using Gauss' law. Considering a Gaussian surface in the form of a cylinder at radius r, the electric field has the same magnitude at every point of the cylinder and is directed outward. The electric flux is then just the electric field times the area of the cylinder.
How is the charge distributed on a non-spherical conductor?
Charge density would be more where the curvature is more. So pointed surface would have max charge density. Hence there is a chance of electrical discharge at the sharp points. This is known as Corona Discharge or Action of Points
What is the fluid used as electrolyte in the battery what happens to the relative density of the fluid as the state of charge decreases?
In all honesty the fluid or electrolyte is water. And the relative density of water as the state of charge decreases is also decreased.
Given that gold is a univalent metal with a molar mass of 197 grams per mol and a density of 19.3 grams per cc how can the density of the charge carriers be calculated?
The density of the of the charge carries can be calculated is by doing 197 grams times 19.3 grams and see what you get as you done calculating .
How do bonded atoms become partially charged?
Due to the difference in the electronegativities of the bonded atoms, the more electronegative atom attracts the shared pair of electrons towards itself, which increases the negative charge density around the attracting atom, consequently the other atom has less negative charge density and thus a positive charge density (relatively positive) gets generated at the donor atom.
When you adjust print density with laser printers you are adjusting the charge on the developing cylinder?
Because they do.
Why is current a vector?
Current Density describe how charge flow at certain point since current density = I/A and the vector direction tells you about the direction of flow at that point.
Why lithium is harder than sodium and potassium?
because of its smaller size and high charge density.....
