Study Questions

Earth Sciences Department

King Fahd University of Petroleum & Minerals

Electric Methods Gravity and Magnetic Exploration SeismologySolid Earth GeophysicsEarthquake Seismology

Condo Hotel
Southern Living Magazine Subscription


  1. Define potential difference. What is the difference in potential difference and voltage? What is the unit of voltage?
  2. Define:
  • conductivity
  • resistivity
  • resistance
  • insulator
  • conductor
  • apparent resistivity
  1. What are the units for resistivity? Give a formula for resistance.
  2. What is the most important thing that determines conductivities of rocks?
  3. When a current is passed through the ground, what effects do bodies of different conductivity produce?
  4. How can you map the electric field produced when a current is passed through the ground?
  5. Define equipotential lines.
  6. What happens to equipotential lines in the presence of a good conductor? in the presence of a good insulator?
  7. How can you study vertical differences in resistivity in the Earth?
  8. Write a good original question to add to this list.

King-Fahd University of Petroleum and Minerals, P.O.Box:1946, Dhahran 31261, Saudi Arabia, Telephone: (966) (03) 860-1661  Fax : (966)(250) 860-2595