Recommended · for beginners
back emf explained
Why people recommend it
Pointed to as an explanation of back EMF in DC motors, useful for understanding why running current falls and why motor drivers need a protective diode.
Watch for: Theory explainer rather than a practical build
In their words
Further, as the motor spins, it generates a back EMF, opposing the input voltage.
DrMoishe Pippik on electronics.stackexchange.com, Jun 2025. CC BY-SA.
According to this video: [video] when the the battery to the motor is on, and the armature is spinning we have both rules (right and left hand) acting simultaneously.
Lilás on electronics.stackexchange.com, Feb 2017. CC BY-SA.
