engineering recuitment UPPCL Technician Electrician 2022 Mock Test Electrician and Wireman Electrical Networks Resistors
A cube of a material having a resistivity of \(\rho(\Omega-m)\) and area of cross section 'a' (m2) has a resistance \(R(\Omega)\) equal to :
1
\(R = \rho/\sqrt{a}\)
2
\(R = \rho\sqrt{a}\)
3
\(R = \rho/{a}\)
4
\(R = \rho a\)