In soil conditions, high resistivity indicates what about conduction of an impressed signal?

• A. Poor conduction
• B. Good conduction
• C. No conduction
• D. Variable conduction depending on moisture

Answer: (A)

High resistivity means the soil strongly resists electrical current, so an impressed signal conducts poorly. This follows Ohm’s law: for a given voltage, larger resistance yields a smaller current, which is what “poor conduction” describes. In practice, moisture, salts, and temperature reduce resistivity and improve conduction, while dry soil raises resistivity and makes conduction worse. While soils can still carry some current even when resistivity is high, saying there is no conduction at all isn’t accurate for typical soils.