resistors. B. Apparatus used to measure electrical resistivity. Probe is shown perpendicular to the core but can be moved so that it is parallel with the core section.
Figure F14. A. Contact method used to measure electrical resistivity. Current is passed between electrodes E1 and E4, and the potential difference is measured between E2 and E3. R1 and R2 are 5 k resistors. B. Apparatus used to measure electrical resistivity. Probe is shown perpendicular to the core but can be moved so that it is parallel with the core section.
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