Electrodynamics

Learn about the electromagnetic properties of our universe, for example about electric charges, currents, electromagnetic fields and so on.

Magnetization Amplifies External Magnetic Field (Paramagnetism)

Magnetization Weakens External Magnetic Field (Diamagnetism)

Imaginary Sphere Surface around a Point Charge

Derivation

Coulomb's Law using 1st Maxwell Equation

Here you will learn how to derive Coulomb's law for two point charges from divergence theorem and Maxwell's first equation.

Formula

4. Maxwell Equation of Electrostatics (integral form)

Formula

Inductance of Two Current-Carrying Wires

Formula

Voltage Divider (Output and Input Voltage, Resistors)

Derivation

Magnetic Field of a Helmholtz Coil

Derivation of the homogeneous magnetic field in the center (on the symmetry axis) of the Helmholtz coil with radius R and distance d.

Formula

Helmholtz Coil (B-Field, Same Current Direction)

Helmholtz Coil with Dimensions

Position Vectors for the Biot-Savart Law for a thin Wire

B-Field of a Helmholtz Coil along the Symmetry Axis (Same Current Direction) - Graph

B-Field of a Helmholtz Coil along the Symmetry Axis (Opposite Currents) - Graph

What is the Vacuum Permeability (Magnetic Constant)?

Distance Between Two Charges and their Electric Field

Formula

E-Field (Continuous Charge Distribution in 1d)

E-Field - Continuous Charge Distribution (Linear Charge Density)

Formula

E-Field (Continuous Charge Distribution in 2d)

E-Field - Continuous Charge Distribution (Surface Charge Density)

E-Field - Continuous Charge Distribution (Volume Charge Density)