What is the relation between current and cross-sectional area?

The relationship between resistance and the area of the cross section of a wire is inversely proportional . When resistance is increased in a circuit , for example by adding more electrical components , the current decreases as a result.

How does the cross-sectional area of the wire affect the electric current?

Wider wires have a greater cross-sectional area. In the same manner, the wider the wire, the less resistance that there will be to the flow of electric charge. When all other variables are the same, charge will flow at higher rates through wider wires with greater cross-sectional areas than through thinner wires.

Does current density depend on area of cross section?

Definitely the current density depends upon the area of conductor in spot Welding . There are many size of electrode tips are available, 13, 16, 20 mm dia. The larger the dia means larger the conductor area.

Why current does not depend on area?

In a series combination of resistances same current flows through all the resistors, no matter what there cross-sectional areas are, what their lengths are, what is the value of resistances and even the material of the wires maybe different, current flowing through them will be same always.

Why current does not depend on length and area?

Larger cross sections have less resistance, and longer conductors have more resistance. Therefore, by multiplying resistance by area and dividing by length, you get a value for a material property (resistivity ρ) that doesn’t depend on the size of the conductor.

How resistivity depends on area of cross section of the wire?

Resistance is inversely proportional to area of cross section. larger will be the area lower will be the resistance and vice versa. this is because through a conductor with large area of cross section current can easily flow and hence resistance is low.

Does the current depend on the length of the conductor?

No, it doesn’t depend on the length and area of the material.

Which does not depend on area of cross section?

The resistance of a wire does not depend on the area of its cross-section.

On what factors does current density depends on?

The current density in a conducting wire depends on the current through the conducting wire and the cross-sectional area of the wire. For a given current, as the diameter of the wire increases, the charge density decreases. The current density is proportional to the current and inversely proportional to the area.

Why current does not change with change in cross sectional area?

A : For a given conductor , electric current does not vary even if its cross sectional area varies . R : A conductor remains unchanged when current flows through it . Reason: On increasing the cross sectional area of a conductor, more current will flow through the conductor.

What is the relation between current and area?

The magnitude of current density is also equivalent to the ratio of current (I) to area (A). In equation form, current density can be written as… The SI unit of current density is the ampère per square meter [A/m2]….Summary.

I =	electric current [A]
A =	area [m2]

Does current depend on the cross sectional area of a conductor?

Again resistance is inversely proportional to area of conductor. Therefore ,current is directly proportional to cross sectional area,greater the area more is the current. Physics of Everyday Life: Does current (I) depend on the cross section area of a wire?

Does the magnitude of current depend on the cross section area?

It is true that the magnitude of current depends on the cross section area of a conductor.But the dependence is not correctly understood in the way it is supposed to be.Imagine a pipe, whose area of cross section varies along its length, carrying water.

Does current depend on the cross section of the serving wire?

If you reduce the cross section of the serving wire, you may reduce the voltage somewhat to the item served, and the effect is hugely dependent on the nature of the load. If it is resistive, certainly the current will be reduced in the whole circuit including the wire. If Does current depend on the area of the cross-section of the wire used?

How does the electric field change with cross sectional area?

Now according to Ohm’s law J = σ E, as current density changes electric field should also change with cross sectional area. How is this possible if electric field is a property of point in space and we maintain a uniform field across the conductor.

https://www.youtube.com/watch?v=soKi5DjRnks