ELI5: Explain Like I'm 5

SI electromagnetism units

Si electromagnetism units measure the strength of magnetic forces and electric fields. These forces push and pull on electrons and other electric charges, like magnets pushing and pulling on paper clips. Si electromagnetism units are measured in a unit called a Coulomb (or "symbol") which measure how much electrical charge can flow through a circuit in one second. They're important for understanding how different electrical components, like wires, resistors, and batteries, interact with each other.