9100009903
Level:
A
The resistance \(R\)
of a wire is a function of a material constant
\(\rho \), the length
\(l\) and the cross
section \(S\).
It can be computed from the formula
\[
R =\rho \cdot \frac{l}
{S}.
\]
Assuming two of the quantities are inversely proportional when the other two
quantities are constant, identify the graph which describes this relationship properly.
