In what way the steady state heat flow analog to the flow of (i) an electric current and (ii) an incompressible liquid?

Explanation

To understand the analogy between steady-state heat flow and the flow of electric current and incompressible liquid, we can break down the concepts step by step.

### Step-by-Step Solution:

1. **Understanding Steady-State Heat Flow:**
- Steady-state heat flow refers to a situation where the temperature distribution in a material does not change with time. The rate of heat transfer (Q) through a material is constant.

2. **Heat Flow Equation:**
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