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← ScienceWhich risk increases when ground conductivity decreases substantially along a buried high-voltage power transmission line?
A)Increased capacitive ground leakage currents
B)Elevated electromagnetic field propagation✓
C)Reduced conductor temperature from induction
D)Enhanced cathodic corrosion protection efficiency
💡 Explanation
When ground conductivity decreases, electromagnetic fields generated by the transmission line propagate further because losses due to induced currents in the ground are reduced, increasing EMF levels at further distances. Therefore elevated electromagnetic field propagation results, rather than leakage, temperature reduction, or corrosion protection, which are all affected by other conditions.
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