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How is the strength of an electric field indicated with electric field lines?
Given a positive charge the electric field lines are drawn starting from the charge and pointing radially outward, ending in principle at infinity, according to the electric field strength being proportional to the inverse square of distance. From the definition of electric field we know that the modulous of the electric field is greater for smaller distances from the field generating charge. Since the electric field lines point radially outward we consider the density of lines an indication of the strength of the electirc field. If we immagine to trace a circle around the electric field generating charge, of radius slightly greater than the radius of the object which holds the charge and therefore generates the electric field, such circle will be crossed by a number 'n' of lines. The density of lines crossing the cirle will then be the circumference of the circle divided by the number 'n' of lines. For a larger circle we will have a greater circumference, but same number of lines 'n', and therefore a smaller density of lines crossing it, which idicates a lower intesity of electric field for a greater distance from the charge.
When electric flux is zero then electric field is also zero why?
The electric flux depends on charge, when the charge is zero the flux is zero. The electric field depends also on the charge. Thus when the electric flux is zero , the electric field is also zero for the same reason, zero charge. Phi= integral E.dA= integral zcDdA = zcQ Phi is zcQ and depends on charge Q, as does E.
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 dimensional formula of coulomb?
The Coulomb is a unit of electric charge. [Charge] is a fundamental quantity.
What is an electric charge less than zero?
Compound
What is the electric field of a finite cylinder?
The electric field of a finite cylinder is the force per unit charge experienced by a charged particle at any point outside the cylinder. It is calculated using the formula for the electric field of a charged line of charge density.
What is the electric field of a cylinder shell?
The electric field of a cylinder shell is the force per unit charge experienced by a charge placed at a point outside the cylinder shell. It is calculated using the formula E / (2r), where E is the electric field, is the charge density of the cylinder shell, is the permittivity of free space, and r is the distance from the axis of the cylinder shell to the point where the electric field is being measured.
What is the formula for calculating the electric field of a cylinder?
The formula for calculating the electric field of a cylinder is E / (2r), where E is the electric field, is the charge density of the cylinder, is the permittivity of free space, and r is the distance from the axis of the cylinder.
What is the Difference between line charge density and surface charge density?
Line charge density refers to charge distributed along a one-dimensional line, such as a wire. Surface charge density, on the other hand, refers to charge distributed over a two-dimensional surface, such as a plate. The units of line charge density are charge per unit length (C/m), while the units of surface charge density are charge per unit area (C/m²).
How can one determine the charge density from an electric field?
To determine the charge density from an electric field, you can use the formula: charge density electric field strength / (2 epsilon), where epsilon is the permittivity of the material. This formula relates the electric field strength to the charge density of the material.
What is charge density and how does it relate to the distribution of electric charge within a given volume?
Charge density refers to the amount of electric charge per unit volume. It is a measure of how concentrated the electric charge is within a given space. The charge density is directly related to the distribution of electric charge within that volume, as a higher charge density indicates a greater concentration of charge in a specific area, while a lower charge density indicates a more spread out distribution of charge.
What is the electric field inside a sphere of uniform charge density?
The electric field inside a sphere of uniform charge density is zero.
What is the relationship between the volume charge density of an electric dipole and its overall electric field distribution?
The volume charge density of an electric dipole affects the overall electric field distribution by influencing the strength and direction of the electric field lines around the dipole. A higher volume charge density results in a stronger electric field, while a lower volume charge density results in a weaker electric field. The distribution of the electric field lines is also influenced by the orientation and separation of the charges in the dipole.
What is the surface charge density on the disks?
The surface charge density on the disks is the amount of electric charge per unit area on the surface of the disks.
What is the relationship between surface current density and the flow of electric charge in a conducting material?
Surface current density refers to the flow of electric charge per unit area on the surface of a conducting material. It is directly related to the flow of electric charge within the material, as the surface current density is a result of the movement of charge carriers within the material. In other words, the higher the surface current density, the greater the flow of electric charge within the conducting material.
Is it possible for charge density to be negative?
Yes, it is possible for charge density to be negative. Charge density refers to the amount of electric charge per unit volume, and it can be negative if there is an excess of negative charges in a given volume.
What is the behavior of the electric field outside a sphere?
The behavior of the electric field outside a sphere is that it behaves as if all the charge of the sphere is concentrated at its center. This means that the electric field outside the sphere follows the same pattern as if the entire charge of the sphere was located at its center.
