World 5 · Motors & generators · 8 min · PROThe commutator
Why a plain coil only rocks
PRO · Field Lab
World 5: Motors & generators is part of PRO
The first world of Field Lab is free. PRO opens the other 29 lessons in 7 worlds — simulations, quizzes and all.
PRO includes
- All 26 labs — every world, every lesson
- Practice exams and certificates
$8.33/mo, billed yearly ($99.99) · or $39.99 monthly