HV Exit Exam • Set 5 Question 29 of 30

Which of the following ground soil types typically exhibits the least (lowest) specific electrical resistivity?

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Direct Answer

Option D: Peat / organic marshy soil

Peat and marshy organic soils contain high moisture and dissolved ionic salts, resulting in the lowest electrical resistivity (typically 10 to 50 Ω·m), making them ideal for earthing.

All Options

Dry sand

Rocky soil

Gravel

Peat / organic marshy soil (Correct Answer)

Detailed Explanation & Context

Peat and marshy organic soils contain high moisture and dissolved ionic salts, resulting in the lowest electrical resistivity (typically 10 to 50 Ω·m), making them ideal for earthing.

Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • High Voltage Safety Officer & Switchgear Operations (HV).

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