In this research work sodium doped copper metal oxide nanoparticles prepared by sol-gel technique dispersed in polyurethane matrix synthesized from castor oil have been studied for electro-mechanical property so as to be used for sensing application. This is achieved by recording current conductivity in conductive polyurethane films prepared by prepolymer method with enhancing filler content from 0.5 wt% to 4.0 wt%. The samples were subjected to tensile elongation and change in current conductivity was recorded. The recorded results reveal that Na:CuO-NPs dispersed in polyurethane has the potential to be used as a sensor material to monitor deformation changes or motion sensitivity