Question

Darcy's law is applicable in saturated soils to determine

• A. Flux density
• B. Hydraulic conductivity
• C. Hydraulic gradient
• D. Hydraulic head

Hint:

Darcy's law: \(q = -K \frac{dH}{dx}\).
- q: Flux density (m/s).
- K: Hydraulic conductivity.
- dH/dx: Hydraulic gradient.

Answer 1

The Correct Option is A

Step 1: Understanding the Question:
This question tests knowledge of Darcy's law and its applications.

Step 2: Key Formula or Approach:
Darcy's law: \(q = -K \frac{dH}{dx}\).
where \(q\) is flux density (flow rate per unit area).

Step 3: Detailed Explanation:
Darcy's law is applicable in saturated soils to determine flux density (A).
Flux density is the volume of water flowing through a unit cross-sectional area per unit time.
Other options:
- Hydraulic conductivity (B): A parameter in Darcy's law.
- Hydraulic gradient (C): The driving force for flow.
- Hydraulic head (D): The total potential energy.
Thus, Darcy's law determines flux density.
Final Answer:
Thus, Darcy's law is used to determine flux density, which corresponds to option (A).
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