Charges, fields, currents and waves — from Coulomb's law and field lines to the force on a moving charge and the propagation of light itself.
Eleven interactive experiments — all live.
Place protons and electrons, then watch the electric field lines and the forces they create.
Open simulator →Fire a charged particle into a field and see the Lorentz force curve its path into a circle.
Open simulator →Snap together batteries, resistors, bulbs, wires and meters on a board, then watch the current flow and read the ammeter and voltmeter.
Open simulator →See the oscillating electric and magnetic fields that make up a travelling light wave, across the whole spectrum.
Open simulator →Move a magnet through a coil and watch a changing flux drive an EMF and current, with the galvanometer swinging.
Open simulator →Drive a series R-L-C circuit with alternating current and sweep the frequency to find the sharp resonance peak.
Open simulator →Charge a capacitor through a resistor and watch the exponential voltage and current curves set by the time constant τ = RC.
Open simulator →Spin a current loop with the F = BIL couple and a commutator — then crank it backwards and harvest the AC sine of Faraday's law.
Open simulator →Resize the plates of a parallel-plate capacitor and slide a dielectric in — with the battery attached or the charge trapped.
Open simulator →Couple two coils through an iron core and watch the turns ratio step AC voltage up or down — with power conserved.
Open simulator →Let energy slosh between a capacitor's electric field and an inductor's magnetic field — the EM twin of a mass on a spring.
Open simulator →