(C) Pole-Dipole
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In an electrical resistivity sounding survey a current of 20 mA is passed through the current electrodes separated by a distance of 50 m and a voltage of 3 V is measured across the potential electrodes, separated by 10m.
(i)The above electrode configuration is known as
(A) Schlumberger
(B) Wenner
(C) Pole-Dipole
(D) Pole-Pole
(ii) The apparent resistivity (in Ω-m) for the above electrode configuration is close to
(A) 100 (B) 200 (C) 300 (D) 400
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