2006-10-17 02:20:36 · 3 answers · asked by ramkrish 1 in Science & Mathematics ➔ Engineering
Do you mean the omega? The omega is a Greek letter that serves as an abbreviation for the ohm, the unit of resistance named after Georg Ohm. It's a bit of a play on the word, because of course the first letter of "Ohm" is o, but o is a poor letter to use as an abbreviation due to its similarity to the number 0.
2006-10-17 02:27:23 · answer #1 · answered by DavidK93 7 · 0⤊ 0⤋
I believe it is because the zigzag makes a straight line "longer" and thus restricts the current. As for japan, europe, and some other countries having different symbols...that's mainly just because most of each country's electricians may have used different symbols in the beginning.
2006-10-17 09:28:22 · answer #2 · answered by icez 4 · 0⤊ 0⤋
Do you mean the circuit symbol? i.e., the long rectangle and the long 'zig-zag'?
The latter was the original circuit symbol, then the rectangle appeared about thirty years ago and was accepted by most countries. I think it was agreed after consultations with various Electrical Engineering institutes.
2006-10-17 09:32:04 · answer #3 · answered by avian 5 · 0⤊ 0⤋