Ohms and Amps... Resistance is futile!

Ohms and amps explained

Ohm's or Ω is the SI or system of international unit of electrical resistance and gets its name from Georg Simon Ohm. 

He determined that there is a direct proportionality between the potential difference (voltage) applied across a conductor and the resultant electric current. This relationship is now known as Ohm's law. 

So an Ohm is a unit of resistance between two points of a conductor when, for instance, a constant 1 volt difference is applied to each point and it produces 1 ampere. Ampere is named after André-Marie Ampère(1775–1836), French mathematician and physicist, considered the father of electrodynamics.

In practice, its name is often shortened to amp. An amp is a SI for basically a rate of flow in a wire. So an ohm is just a way of measuring how easily electricity flows along a certain path. Electrical resistance shares some conceptual parallels with the mechanical notion of friction.


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