Which of the following wires would have the greatest resistance?
an aluminum wire 10 cm in length and 3 cm in diameter
an aluminum wire 5 cm in length and 3 cm in diameter
an aluminum wire 10 cm in length and 5 cm in diameter
an aluminum wire 5 cm in length and 5 cm in diameter
2007-06-27 08:38:31 · 3 answers · asked by Anonymous in Education & Reference ➔ Homework Help
an aluminum wire 10 cm in length and 3 cm in diameter unless you are running high frequency currents through it - then you get skin effect
2007-06-27 08:42:32 · answer #1 · answered by oldhippypaul 6 · 1⤊ 0⤋
Right. For those who just gave out the answer, I will explain in full.
Electrical resistance increases with length AND increases as the wire gets thinner.
Therefore the longest, thinnest wire has the greatest resistance.
The longest, thinnest wire is???
10 cm in length, 3 cm in diameter.
2007-06-27 09:06:45 · answer #2 · answered by Michael B 6 · 1⤊ 0⤋
If the kit deal of wires has the comparable go sectional area. (The sum of the guy twine's areas) and length and the wires are no longer linked to the comparable factors. in the event that they're it creates a parrallel circuit which might scale back the resistance of the completed.
2017-01-01 08:44:24 · answer #3 · answered by barakat 4 · 0⤊ 0⤋