A teacher explained why by making use of a highway analogy. The an ext lanes girlfriend have, the quicker the cars go through, whereby the variety of lanes obviously represent the cable thickness and also the cars represent electrons. Straightforward enough.

But after ~ a specific point shouldn"t the wire obtain so thick, that any thickness after the doesn"t affect resistance? for example, if you have actually a 100 car going down a highway, a 4 roadway highway is walking to enable the cars to move a lot quicker than a 1 roadway one, because there room a fewer cars per lane. But a 1000 lane highway highway is going to it is in as effective as a 10000 lane one, because on both highways every automobile has its own lane. ~ a 100 lanes, the variety of lanes doesn"t administer resistance.

So why does boosting wire thickness always decrease resistance?

You are watching: How does length of wire affect resistance

electromagnetism physics
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asked Aug 11 "13 in ~ 19:38

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