Question: Which principle is primarily used in the 'Electrical Resistivity' method of geophysical surveying for site investigation? A ) The variation in magnetic susceptibility of different
Which principle is primarily used in the 'Electrical Resistivity' method of geophysical surveying for site investigation?
A The variation in magnetic susceptibility of different materials
B The resistivity differences in soil and rock substrata to electric current
C The radioactive decay of geological formations
D The acoustic impedance differences in subsurface materials
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