Moisture content in the soil _______ the earth soil resistance.

A. increase

B. decrease

C. does not affect

D. none of the above

Answer: B. decrease

Explanation: 

• The measure of the resistance offered by the soil in the flow of electricity, is called the soil resistivity. 
• The resistivity of the soil depends on the various factors like soil composition, moisture, temperature, etc.
• The resistivity of the soil varies with the depth. 
• The lower layers of the soil have greater moisture content and lower resistivity.
• With the increase in moisture content, the resistivity decreases and hence soil resistance decreases.