(a) Factor on which resistance of conductor depends:
(1) Length of conductor
(2) Area of cross section
(3) Nature of material
(b)
\(R = \frac{pl}A\)
\(l=\frac{RA}p\)
\(l = \frac{10\times\pi\times(0.01\times10^{-2})^2}{50\times10^{-3}}\)
\(l = \frac{0.00314\times10^{-4}}{50\times10^{-3}}\)
\(l = 6.28 \times10^{-5}\times10^{-1}\)
\(l = 6.28\times10^{-6}\,m\)
