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L8-page2 - exploration Electricity Basics Voltage V...

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2 Introduction • Link resistivity (ability of the earth to conduct an electric current) to subsurface structure. • Useful because resistivity of earth materials varies by around 10 orders of magnitude. • Developed by Conrad Schlumberger (France) and Frank Wenner (United States) in early 20th century. • Uses: Archeology, Environmental, Mineral
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Unformatted text preview: exploration Electricity Basics Voltage V - Electrical potential energy per unit charge [volts] Current i- amount of charge per unit time [amperes] i = 1 R V Resistivity R is just a proportionality constant [ohms] R relates current I to voltage I. However, no units of length in this form of Ohm’s law....
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