what is the resistance of a 30 m silver wire with a 2 mm diameter
Length of silver wire = 30 m
Diameter of silver wire is = 2mm =2×10-3
area of cross section of wire = "\\pi r^2= 3.14\u00d7(2\u00d710^{-3})^2"
A=12.56×10-6
Resistivity of silver wire = 1.59×10-8
"R=\\frac{\\rho l}{A}"
"R=\\frac{1.59\u00d710^{-8}\u00d7 30}{12.56\u00d710^{-8}}"
R= 3.797 "\\Omega"
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