Hardware Reference
In-Depth Information
Appendix C
Electronics Reference
The experienced electronic hobbyist or engineer will already know these formulas
and units well. This reference material is provided as a convenience for the student or
beginning hobbiest.
Ohm's Law
Using the following triangle, cover the unknown property to determine the formula
needed. For example, if current (I) is unknown, cover the I, and the formula
V
R
remains.
V
I
R
Power
Power can be computed from these formulas:
PIV
PI R
=´
=´
2
2
V
R
P
=
