Resistivity of the earth increases sharply when moisture falls below
Resistivity of the earth increases sharply when moisture falls below
Right Answer is:
20%
SOLUTION
- Moisture; moist soil is best suited for earthing purpose
- It is normal practice to insert an earth electrode well below the ground level, to get a stable moist soil in depth
- Wet marshy land, loamy soil land, arable land, clayey land or land with loam mixed with small quantities of sand, gravel, and stones are the best choice for the purpose
- Above 20 % of moisture content, the resistivity is very little affected. But below 20% the resistivity increases rapidly with the decrease in moisture content.