A2L Item 220

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. 1

  2. 2

  3. 3

  4. Both #1 and #3 have the same, and theirs is less than the resistance of



(2) Students should be able to reason that the contribution to the total
resistance from a slice of material decreases as the area increases.