Question

If the diameter of a wire is tripled and the length is doubled, the resistance would change by a factor of __?

Answer 1

it’s going to be times 3

Step-by-step explanation:

so the answer would be three times which means it will change by a factor of 3.

I’m sorry I wrote it wrong the first time.

Answer 2

Diameter triples.
Area becomes 9 times as great.
Resistance is reduced to 1/9 as much.

Length doubles.
Resistance is increased to 2 times as much.

Both changes.
Resistance changes by 2 • 1/9 .
Resistance becomes 2/9 as much.
That's 22.2% of the original resistance.
Resistance decreased by 77.7% .