Unformatted text preview: measure potential difference ( ∆ V) . This lead to use of four electrode array for each measurement. Measurement Practicalities Resulting measurement given as ∆ V=V P1V P2 = ρ I/(2 π )*(1/r 11/r 21/r 3 +1/r 4 ). Can be rewritten ∆ V= ρ I*G/(2 π ) where G/2 π is the Geometrical Factor of the array. ρ...
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 Spring '09
 wei
 Current, Volt, Vsource, measure potential, measure potential difference

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