Current Density Calculator

Current density is defined as the amount of current flowing through a unit per area. This is a vector quantity and it is expressed as ‘J ’. Unit of current density will be ampere per square meter.

Current Density = Current /Area

Here, as you are seeing, current and current density is not the same. Current is defined as a flow of electrons in the conductor, whereas current density is defined as a flow of electrons in the conductor per unit cross-sectional area.

Amount of current moving onto a spot in a conductor to the cross-sectional area of the conductor that is perpendicular to the flow of current at that spot. We are here to help you learn the formula of Current Density.

Current Density(J) = Current (I) / Area(A)

J = I/A

• Where, Unit of this current density is A/m²
• Unit of current is Ampere( A)
• Unit of Area is m2

Along with the current density tool, we are also providing step-by-step procedures to calculate the current density.

• First, write down the values that are given in the problem.
• Substitute all the values into the current density formula.
• Find the result using the mathematical calculation involved in this equation.
• You can utilize our tool to get the answers quickly.

Question 1: Find the current density of the copper wire with an area of 25mm² and the flow of electrons is 10mA current?

Solution:

Given Values are I = 12mA = 12 x 10^-3

A = 20mm² = 20 x 10^-3

Current Density = Current/ Area

J = I/A

J = (12 x 10^-3) / (20 x 10^-3)

J = 12/20

J = 0.6 A/m²

For more concepts check out physicscalculatorpro.com to get quick answers by using this free tool.

1. How do you find current density?

Current density is defined by the formula, J = I/A. By using this we will find the current density.

2. 2. What is the current density?

The amount of current flowing through a unit cross-sectional area is called current density.

3. Is current density scalar or a vector quantity?

Current density is a vector quantity.