Electromagnetism, made visual

Coils, fields and circuits explained with clear diagrams, from electromagnets to transformers and capacitors.

How an Electromagnet Works

Current through a coil creating a magnetic field you can switch on and off.

How a Transformer Works

Two coils and a shared magnetic core changing voltage up or down.

How a Capacitor Charges and Discharges

Energy stored in an electric field, released on demand.

How an Induction Motor Rotates

A rotating stator field dragging the rotor around with it.

How a Diode Rectifier Circuit Works

Turning alternating current into one-direction flow, step by step.

Solenoid Magnetic Field Line Distribution

The field lines a current-carrying coil sets up around itself.

Permanent Magnet Internal Magnetic Domain Model

Tiny aligned domains adding up to a magnet's overall field.

Capacitor vs Inductor Energy Storage

Electric field versus magnetic field, compared side by side.