When PhET ported its legacy Flash and Java sims into HTML5, some characteristics of the sims changed. Some of the changes broke some of the activities I had written for the original simulations.
Original John Travoltage was more fun than HTML5 John Travoltage, in my experience. The audio seemed to be a sample from John Travolta, himself. Over-charging John resulted in a quirky form of corona discharge. Most importantly, it was possible to sustain a maximum-length discharge indefinitely. Good times. Oh, well.
Here are the activities I've written for sims involving electricity and magnetism.
Greased Lightning [Charging and Discharging] at PhET
Using PhET's John Travolage sim, determine the likelihood of getting a “carpet shock” (based on controllable variables), and to avoid or produce such shocks under a series of challenging conditions. This activity is included in the Conceptual Physics 12th edition lab manual at Pearson.
Quest for the Coulomb Cup [Electric Fields] at PhET
Using PhET's Electric Field Hockey sim, use a simulation to gain a sense of the vector nature of the electric field and the consequence of the inverse square law that governs electrostatic force by completing a series of game-like challenges. This activity is included in the Conceptual Physics 12th edition lab manual at Pearson.
Lectric Plates [Uniform Electric Fields] at PhET
Using PhET's Capacitor Lab sim, vary the variables that affect the electric field between charged paltes and see what happens.
Two-Plate Special [Capacitance] at PhET
Using PhET's Capacitor Lab sim, learn the characteristics and relationships that govern parallel-plate capacitors.
Batteries & Bulbs [Circuits] at Teachers Pay Teachers
Using PhET's Circuit Construction Kit *DC) sim, explore various arrangements for delivering energy from the battery to the bulbs, and how some arrangements compare with the others. [This was written during the pandemic to emulate an existing in-person lab activity.]
Faraday's Electromagnetic Lab [Electromagnetism] at PhET
Using PhET's Faraday's Electromagnetic Lab sim, manipulate simulated magnets, compasses, and coils to see how magnetic fields interact with electric currents. This activity is included in the Conceptual Physics 12th edition lab manual at Pearson.