Electromagnetic Field Calculator

What Is This?

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📚 Glossary

Coulombs Law

The force between two point charges is proportional to the product of their charges and inversely proportional to the square of the distance between them.

Amperes Law

A circulating magnetic field is produced by an electric current and by a changing electric field.

Faradays Law

A changing magnetic flux through a loop induces an electromotive force (voltage) in the loop.

Gauss Law

The total electric flux through any closed surface is proportional to the enclosed electric charge.

Maxwell Equations

Four fundamental equations that describe how electric and magnetic fields are generated and altered by charges, currents, and changes in the fields themselves.

Electric Field

A vector field surrounding an electric charge that exerts force on other charges. Measured in volts per meter (V/m).

Magnetic Field

A vector field produced by moving charges or changing electric fields. Measured in tesla (T).

Electromagnetic Wave

Self-propagating wave of oscillating electric and magnetic fields traveling at the speed of light.

🏆 Key Figures

James Clerk Maxwell (1865)

Unified electricity, magnetism, and light into four equations — one of the greatest achievements in physics

Charles-Augustin de Coulomb (1785)

Quantified the electrostatic force between charged objects

Andre-Marie Ampere (1820)

Established the relationship between electric current and magnetic fields

Michael Faraday (1831)

Discovered electromagnetic induction and introduced the concept of field lines

Heinrich Hertz (1887)

First to experimentally prove the existence of electromagnetic waves predicted by Maxwell

💬 Message to Learners

Electromagnetic fields are everywhere — in the light you see, the phone signals you use, and the forces holding every atom in your body together. Maxwell's four equations, written over 150 years ago, are still the foundation of all modern electrical engineering, telecommunications, and optics. Understanding these invisible forces means understanding one of the deepest layers of reality.