Ohms For Dummies

The abbreviations k for kilo and m for mega are used for thousands and millions of ohms.

Ohms for dummies. Go back if you dare to your high school algebra class and remember that you can rearrange the terms in a simple formula such as ohm s law to create other equivalent formulas. Ill cut out all the excess and. An ohmmeter is used for measuring resistance. Electricity is an extremely difficult concept to understand which is why today you re going to learn from me a dummy how i learned the fundamentals of electricity.

Dont be so hard on yourself you re not dumb. For the purposes of most electronic circuits you can assume that the resistance value of ordinary wire is zero ohms 0 ω. Thus a 1 000 ohm resistance is written as 1 kω and a 1 000 000 ohm resistance is written as 1 mω. The concept behind ohm s law was first explained by german physicist georg ohm who the law is also named after.

To help us understand the the relationship between the various values a little further we can take all of the ohm s law equations from above for finding voltage current resistance and of course power and condense them into a simple ohms law pie chart for use in ac and dc circuits and calculations as shown. Ohm s law is incredibly useful because it lets you calculate an unknown voltage current or resistance. Ohms for dummies the horse understood her broke the reins and ran away. As soon as the war of vape juice 12mg nicotine resistance was over his industry was confiscated by the government.

Ohms law pie. Note that you can only do this if you have an idea of what the resistance of what you re measuring ought to be. Ohms law pie chart. In short if you know two of these three quantities you can calculate the third.

A multimeter can measure several functions including voltage current resistance and temperature. For example if you expect the circuit you re measuring to have a resistance of 1100 ohms then your ohmmeter should be set to x100. Ohms law for dummies.