Fundamentals (Electromagnetism)

Electric charge conservation, quantization, and foundational electromagnetic vector principles.

General idea of the topic

This block builds the foundation of classical electromagnetism from three core concepts: electric charge, the electromagnetic field and force on charges, organized within a coherent modeling framework.

It establishes how a charge distribution generates fields in space, how those fields exert forces, and how the superposition principle allows multiple sources to be combined without losing quantitative rigor.

What you will truly understand

  • How a charge distribution defines fields in space.
  • How those fields produce forces and trajectories.
  • How to combine multiple sources with superposition without losing rigor.

Recommended learning route

  1. Electric charge and distributions.
  2. Electric field and magnetic field.
  3. Electric force and Lorentz force.
  4. Superposition principle for real scenarios.

Physical criterion you must acquire

Choose the model by system, scale and domain of validity before substituting formulas.

Connection with real problems

This foundation appears in sensors, insulation, actuators, particle guidance and electrical system design.

Final goal of the topic

Solve introductory electromagnetism problems with physical traceability, clean algebra and final validation.

Topics in this section

  • Electric Charge

    Fundamental property of matter originating the electromagnetic interaction; quantized and conserved.

  • Electric Field

    Vector quantity describing the electric force per unit charge at each point in space.

  • Magnetic Field (Fundamentals)

    Vector quantity quantifying the magnetic influence on moving charges at each point in space.

  • Electromagnetic Forces

    Coulomb electrostatic force and full Lorentz force on moving electric charges.

  • Superposition Principle

    Principle allowing vector addition of fields and forces from multiple charges.