These apps are verified by high download counts and positive reviews in the vocational education community. Electrical Wiring Simulator
You're looking for a free electrical troubleshooting simulator that has been verified or validated in some way. Here are a few options: free electrical troubleshooting simulator verified
Troubleshooting Industrial Electrical Circuits Simulator Help - BIN95 These apps are verified by high download counts
This runs natively in your Chrome browser. No Flash, no Java, no login. simulate microcontrollers like Arduino
: A browser-based platform by Autodesk aimed at beginners and students.
: An ideal starting point for beginners and students. It allows you to virtually "breadboard" components, simulate microcontrollers like Arduino, and troubleshoot code in real-time.