Robot Builder's Bonanza, 4th Edition, 4th Edition

Appendix DElectronic Reference

Formulas

Here are some of the more common electronic formulas you will encounter in your electronics work. Many of these formulas have been with us for a long time.

OHM’S LAW

Ohm’s law calculates the relationship between power, voltage, current, and resistance. The basic formulas are:

where:

       V = voltage (in volts)

       I = current (in amps)

       P = power (in watts)

       R = resistance (in ohms)

Example:

To find the power in a circuit consuming 100 volts at 10 amps, multiply volts times amps (100 × 10 ...