Introduction

Now that you understand Ohm's Law and the different variables that go into the calculations, here are the equations you need to know and can reference later. 

   Formulas: Finding Voltage  
 

LaTeX: V=R\times I

LaTeX: V=\frac{P}{I}

LaTeX: V\:=\:\sqrt{P\times R}

 

 

   Formulas: Finding Resistance  
 

LaTeX: R=\frac{V}{I}

LaTeX: R=\frac{V^2}{P}

LaTeX: R=\frac{P}{I^2}

 

 

   Formulas: Finding Current  
 

LaTeX: I=\frac{V}{R}

LaTeX: I=\frac{P}{V}

LaTeX: I=\sqrt{\frac{P}{R}}

 

 

 

Variable Key

Creative Commons License

Unless specified otherwise, any and all work on this page is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.