Asked by tyger2020

Which has a greater resistivity?

1. A copper rod that is shaped like a rectangular prism with dimensions of 1cm x 1cm x 1000m

2. A copper rod that is shaped like a solid cylinder with diameter 1cm
and length 1000m

I think it should be the rectangular prism because it has a greater area. Is this right?

Or do they both have the same resistivity?
Answered by Damon
The skinnier the wire is the greater its resistance. The fatter it is, the less the resistance.
Answered by tyger2020
What about for resistivity though?
Answered by Damon
the resistivity of the copper is constant
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