......all except...wire length,temperature,ductility,or wire material??
2006-06-08 15:10:51 · 6 answers · asked by anna c 2 in Science & Mathematics ➔ Physics
Resistance does not depend upon the ductility of the metal used in the wire.
Ductility is the property of the substance to be easily drawn into wires. This does not effect electrical resistance.
2006-06-08 15:24:03 · answer #1 · answered by mrjeffy321 7 · 0⤊ 0⤋
Hey anna. There are some great answers here. But let's step back for a moment and think about this. Imagine that you have a two pipes through which water flows, one wide and one narrow. First question I have is, through which pipe will water have an easier time flowing, the pipe that is narrow or the pipe that is wide? Easy, the pipe that is wide. It makes sense because there's more room where the water molecules can flow. Imagine a huge five-lane highway versus a tiny one lane road. By analogy, a wire with a large cross-sectional area offers less resistance because there is more "room" for electrons to flow.
What about distance? Well, imagine that you have to drive your car 10 miles and some other person has to drive 100 miles. Which car is likely to face greater resistance from the road? WHich is more likely to overheat as a result of that resistance? The longer road. By analogy, a long wire will create greater resistance than a short one, because those electrons flowing past the metal atoms create heat. The longer the wire, the longer the path of resistance.
Temperature is important because at higher temperature, the atoms in the conductor- usually a metal- will start to move around and vibrate faster. With so many atoms moving around, electrons have a harder time flowing past them, so resistance also increases. Imagine trying to move around in a mosh pit- with overheated people bumping and grinding-versus a pleasant stroll in a cool, vacant park
Ductility is the exception. Ductility has to do with the pliability and stretchability of metal. But this, by itself, doesn't make a wire more or less resistant to electron flow.
2006-06-09 02:20:50 · answer #2 · answered by bloggerdude2005 5 · 0⤊ 0⤋
except ductility
2006-06-09 00:52:15 · answer #3 · answered by neelima 2 · 0⤊ 0⤋
ductility
2006-06-08 22:39:13 · answer #4 · answered by Anonymous · 0⤊ 0⤋
all except ductility.
2006-06-08 22:19:29 · answer #5 · answered by me 4 · 0⤊ 0⤋
Try reading this..
2006-06-08 22:13:22 · answer #6 · answered by mac 3 · 0⤊ 0⤋