KC9AOP 
 KC9AOP
ELECTRONICS AND AMATEUR RADIO

OHM'S LAW - DIRECT CURRENT

This document is intended to share information, formulas and documentation relating to using Ohm's Law for computing electrical values for direct current.

I welcome any comments or corrections.  Thanks to all who have notified me of inaccuracies.  This type of participation makes this site more valuable.  Please click here for a link to email your comment, correction, suggestion or question.


Ohm's Law For Direct Current - The Formulae

Basics

Here it is, short and sweet.  Keep reading for the pie chart and more information:

 power (P) = watts, voltage (E) = volts, current (I) = amperes and resistance (R) = ohms

P = WATTS   E = VOLTAGE I = AMPERES R = OHMS(of resistance)
volts2/ohms watts * ohms  volts/ohms volts/amperes
amperes2 * ohms watts/amperes watts/volts volts2/watts
volts * amperes amperes* ohms watts/ohms watts/amperes2


Ohms Law