Plain Faraday Game Casual Physics offers a simple magnet control test to light a bulb using electromagnetic induction, and i learned how voltage changes as flux shifts.
Step by rotating or moving the magnet to adjust flux in a coil, to generate current and light the bulb.
Choose Angular or Linear mode to rotate or move the magnet vertically, and aim for voltages of 24 V, 60 V, and 110 V for medals.
Game is in English and Portuguese, and a hidden Easter egg unlocks hack mode with multiple touches or keystrokes for higher voltages.
Most helpful is to adjust the magnet to keep flux changing steadily, and then time your moves to maintain current to the bulb.
Q: What are the controls? A: Rotate or move the magnet vertically.
Q: What is the objective? A: Generate current to light the bulb.
Q: What stated feature exists? A: Two modes, Angular and Linear.
Q: What is the main mechanic? A: Adjust magnetic flux to induce current.