DC Electric engine with a short description of the physical principle at working. For fun and learning.

• Include a DC motor for 3 V, 1500 RPM
• 1 battery  holder case for two AA
• 1 shaft proppeller with 4 vanes (the colloer may vary)
• 1 mini boat rocker switch
• the set of the above items are new, with no flaws or defects

keywords: education, inventors, learning electromagnetics, hands-on experiments.