The ability of a core to resist the flow of electrical current either through the bulk of the material or on its surface. The unit of the volume resistivity is Ohm-cm. Core volume resistivity becomes an issue in inductor designs where the leads/terminals come in contact with the core material. This type includes axial and radial inductors that have leads epoxied into the core. As for core materials, high permeability ferrites present the most concern as their volume resistivity is typically the lowest. Under certain conditions, a low resistive path can be realized between two inductor terminals if they are in contact with a low resistivity core. The inductor, under these conditions, will lose its higher impedance characteristics. Reciprocal of conductivity.
The electrical resistance between the opposite faces of a solid volume of insulating material. It is measured under prescribed conditions using a direct current potential after a specified time of electrification. Commonly expressed in ohm-cm.
Resistance of a material expressed in terms of volume. Units of ohm-cm. Important parameter of ECCOSHIELD\ shielding materials
The electrical resistance between opposite faces of a 1 cm cube of insulating material, commonly expressed in ohms/cm.
Reciprocal of conductivity; the resistance of a material to the flow of electrical current, usually expressed in ohm-cm.
Or specific resistivity of a material, expressed in W.cm. Resistance to electrical current flow through the bulk of an object.
Volume resistivity is the numerical measure of the resistance to electrical current flow through a material. It is similar to surface resistivity except that the added variable of material thickness produces a value expressed in ohms per centimeter of thickness. Go back to the MENU Go to END
The electrical resistance between opposite faces of a one cm. cube of insulating material, commonly expressed in ohms-centimeter.
The electrical resistance between opposite faces of a 1 centimeter cube of material, commonly expressed as ohms-centimeters (ohm-cm).
The ratio of the DC voltage per unit thickness to the amount of current per unit area passing through a material. Volume resistivity is given in ohm-centimeters.
resistance between opposite faces of 1 cm cube of material, usually in ohm-cms.
The ratio of the electrical resistance through a cross section A divided by the length through which the current flows. Measured in ohms-cm.
The measure of ratio of the potential gradient parallel to the current in the material to the current in density.
The electrical resistance between opposite faces of a 1cm cube of insulating material. It is measured under prescribed conditions using a direct current potential after a specified time of electrification. It is commonly expressed in ohm-centimeters. The recommended test is ASTM D257-54T.