Back Elektriese weerstand en konduktansie Afrikaans المقاومة والمواصلة الكهربائية Arabic বৈদ্যুতিক রোধ ও পরিবাহিতা Bengali/Bangla Resistència elèctrica i conductància Catalan Electrical resistance and conductance English مقاومت و رسانایی الکتریکی Persian Friotaíocht agus seoltas leictreach Irish Цахилгааны эсэргүүцэл Mongolian Electrical reseestance an conductance SCO Električni otpor i vodljivost Serbo-Croatian
Resistance, measured in ohms (symbolized by the Greek letter omega - Ω), is a measure of the opposition to current flow in an electrical circuit.
When an electron moves through a conductor like a metal wire, is when an electric current would flow. Colliding of different moving ions in the metal makes it harder for current to flow which is what causes resistance.
The longer a wire is, the more resistance there is because of the amount of collisions within being more as they pass; this means that the relationship between the two are proportional.
On the other hand, the thinner a wire is, the more resistance. This is because of the space of the passing ions being less meaning the collisions increase. That makes them inversely proportional.
As Resistance increases, current decreases making them inversely proportional.