8.08 More about resistance factors

Question 1

Link between resistance and length

Answer 1

Resistance is directly proportional to length

Question 2

Link between cross sectional area and resistance

Answer 2

Resistance is inversely proportional to area

Question 3

For any given conducting material at constant temperature:

Answer 3

resistance is directly proportional to length/area

Question 4

Proportionality resistance formula

Answer 4

R (resistance), length (l), area (A), p (restivity of a material)

R= p*l/A

Question 5

Comparing different wires A and B made from the same material formula

Answer 5

(resistance (A) * area (A)) /length(A) = (resistance (B) * area (B))/length (B)