The Flux Density Calculator helps users determine the amount of magnetic or electric flux passing through a given area. This tool is essential in physics, electrical engineering, and materials science, where precise control or understanding of field distribution is crucial. Magnetic flux density is used to describe the strength of a magnetic field in a specific area, while electric flux density deals with the distribution of electric charge across a surface.
This calculator falls under the category of Electromagnetism and Field Strength Calculators.
formula of Flux Density Calculator
Magnetic Flux Density (B):
Flux Density (B) = Φ / A
Where:
B = Magnetic flux density (in teslas, T)
Φ = Magnetic flux (in webers, Wb)
A = Area the flux passes through (in square meters, m²)
For Electric Flux Density (D):
Electric Flux Density (D) = Q / A
Where:
D = Electric flux density (in coulombs per square meter, C/m²)
Q = Electric charge (C)
A = Area (m²)
Unit Summary:
1 tesla (T) = 1 weber/m²
1 Wb = 1 T·m²
1 C/m² = electric flux density
Both formulas rely on dividing the total flux or charge by the area, so consistency in units is important.
Magnetic and Electric Flux Density Reference Table
| Quantity | Unit | Description |
|---|---|---|
| Magnetic Flux (Φ) | Weber (Wb) | Total magnetic field passing through area |
| Magnetic Flux Density (B) | Tesla (T) | Flux per square meter |
| Electric Charge (Q) | Coulomb (C) | Total charge distributed |
| Electric Flux Density (D) | C/m² | Electric charge per unit area |
| Area (A) | m² | Surface area over which field is measured |
This table helps users relate different physical quantities involved in flux calculations.
Example of Flux Density Calculator
Let’s calculate the magnetic flux density when the magnetic flux is 0.2 Wb and the area is 0.1 m².
Using the formula:
B = Φ / A
B = 0.2 / 0.1 = 2 T
So, the magnetic flux density is 2 teslas.
Now for electric flux density:
Suppose the electric charge is 5 C and the area is 2 m².
D = Q / A
D = 5 / 2 = 2.5 C/m²
Therefore, the electric flux density is 2.5 coulombs per square meter.
Most Common FAQs
Flux refers to the total amount of magnetic or electric field passing through a surface. Flux density measures how much of that field is concentrated in a specific area.
Yes. The calculator works for both magnetic flux density (B) and electric flux density (D) as long as the correct formula and units are used.
Yes. A tesla is a relatively large unit of magnetic flux density. For context, Earth’s magnetic field is around 50 microteslas (0.00005 T), while an MRI machine can produce fields of 1.5 to 3 T or more.