Derivation Of Resistivity Equations; Resistivity Calculations; Calculating Resistivity - Keithley 8009 Instruction Manual

Resistivity test fixture

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In this section:

Resistivity nomographs ............................................................ 3-4

Resistivity equations ................................................................ 3-6

Resistivity calculations

For instruments that do not directly measure resistivity, this section provides the equations needed to

calculate volume and surface resistivity using the applied test voltage and the measured current. If

accuracy is not needed, nomographs can be used to approximate resistivity. This section also shows

how to derive the equations used to calculate resistivity.

Calculating resistivity

The following equations are used to calculate volume and surface resistivity. They are based on the

physical dimensions of the electrodes of the 8009. For more information on how these equations are

derived, see

Derivation of resistivity equations

(on page 3-1).

Section 3

Table of Contents