Interactive Physics Simulations https://ophysics.com/fl1.html
PHET has the best applets:
http://phet.colorado.edu/en/simulations/category/new
Or Walter Fendt:
Electronics:
Motors:
Some old links that might be interesting:
Kinematics
Dynamics
Momentum
Electrostatics
https://phet.colorado.edu/sims/html/charges-and-fields/latest/charges-and-fields_en.html
3d Electric Fieldsyou can set the relative charge if you choose "point charge and charged sphere", set the size of the sphere to small and adjust the charge of the sphere.
Electric Fields where you set the charges fun randomizing function
Electrodynamics
Nuclear Physics
Optics
Oscillation & Waves
Relativity
Thermodynamics
Uniform circular motion