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Robot Building for Beginners by David Cook

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Chapter 27. Appendix

This chapter contains notes and other items not covered in the main portion of the book.

It begins with proper credit to Ohm's law, which describes the interdependent relationship between voltage, current, and resistance. Then, I come clean about some of the mistakes I made during development, so that you can avoid them yourself. Finally, the chapter concludes with an explanation and listing of the various labels for positive and negative power.

Magical Ohm's Law

Most of the electrical formulas in the book are derived from Ohm's law. Therefore, it would be remiss not to directly describe the most valuable set of math equations for electronics.

Ohm's law describes the relationship between voltage, current, and resistance. If you ...

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