AMPP CP3 Technologist Practice Questions - AMPP CP3 Cathodic Protection Technologist Exam

Dwight's equation gives the ground resistance of a single vertical anode. The equation is:

R = (ρ / 2πL) × (ln(8L/d) − 1), where ρ is soil resistivity, L is anode length, and d is anode diameter R = ρ × L R = ρ / (π × d²) R = 4π × ρ × L

Correct Answer:

R = (ρ / 2πL) × (ln(8L/d) − 1), where ρ is soil resistivity, L is anode length, and d is anode diameter

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