Question

Comment how Electrical resistivity of a given metallic wire depends upon(a) its length(b) its thickness(c) its shape(d) nature of the materialNCERT Class XScience - Exemplar ProblemsChapter_Electricity

Answer 1

resistivity doesnt depend on the geometrical parameters like length,thickness,shape but it depends on the nature of the material
resistivity is defined as resistance per unit length in a unit crosssection area