This study shows the changes in certain electrical properties of the dissolved PVPD in distilled water before and after x-ray application the doses of the used x-ray was 3000rad with average (107.14 rad/min ) for (28 min) ,the x-ray application where done in 4steps, 7mints for each step. The study involve the change in electrical conductivity and measure the capacity of dissolved PVPD in different concentration, and estimation the molar conductivity, dissociation degree and dielectric constants, it was found the dielectric constants increases with increase of concentration . And increase after x-ray application, but the moler conductivity and dissolution degree decrease in the increase concentration, but the values increase after x-ray application.

x-ray, PVPD, Distilled Water, Electrical Properties, Concentration.