Please help me!! Simple resistance problem!
A 5.0 m-long wire has a cross-sectional area of 2.1 mm2 and a resistance of 45 m. What is the resistivity of the material constituting the wire?

Question

Please help me!! Simple resistance problem!
A 5.0 m-long wire has a cross-sectional area of 2.1 mm2 and a resistance of 45 m. What is the resistivity of the material constituting the wire?

souvik · Answer

If R be the resistance,l be  the length,A be the cross section..and $\rho $ be the resistivity then..
$$R=\rho*l/A$$
u have to put the data and find $\rho$

anonymous · Answer

thanks so much!