|Home | Site Map | Components | 555 | Symbols | Study | Books | Construct | Solder | Projects | FAQ | Links | Privacy|
To make a current flow through a resistance there must be a voltage across that resistance. Ohm's Law shows the relationship between the voltage (V), current (I) and resistance (R). It can be written in three ways:
The Ohm's Law equations work if you use V, A and , or if you use V, mA and k. You must not mix these sets of units in the equations so you may need to convert between mA and A or k and .
The VIR triangle
Write down V, I and R in a triangle like the one in the yellow box on the right.
Ohm's Law CalculationsUse this method to guide you through calculations:
It should be Very Easy Now!
Next Page: Power and Energy | Studying Electronics
© John Hewes 2015, electronicsclub.info (based in the UK)
No part of this website may be reproduced in any way commercially without my prior permission.
This website does not collect any personal information unless you contact me by email. If you send me an email your name, email address, and any other personal information you supply will be used only to respond to your message. Your personal information will never be given to any third party without your permission.
This website displays affiliate advertisements. If you click on these advertisements the advertiser will know you came from this site and I may be rewarded if you become their customer. No personal information is passed to advertisers.
This website uses StatCounter cookies to estimate the number of unique visitors. No personal information is stored in the cookies. If you would like further information or wish to refuse these cookies please visit the StatCounter website.
To learn how to delete and control cookies from your browser please visit AboutCookies.org.