Goal: Reason regarding resistance
Source: 283-550 Resistance and geometry
Which object below has the lowest resistance? All three have length L
and are made out of the same material.
-
1
-
2
-
3
- Both #1 and #3 have the same, and theirs is less than the resistance of
#2.
Commentary:
Answer
(2) Students should be able to reason that the contribution to the total
resistance from a slice of material decreases as the area increases.