What is Joule's heating effect ? How can it be demonstrated experimentally ? List its four applications in daily life.

Explanation

### Step-by-Step Solution:

**Step 1: Define Joule's Heating Effect**
Joule's heating effect, also known as resistive heating, states that when an electric current passes through a conductor, it generates heat. The amount of heat produced (H) is directly proportional to the square of the current (I), the resistance (R) of the conductor, and the time (T) for which the current flows. Mathematically, this can be expressed as:
\[ H = I^2 R T \]

**Step 2: Experimental Demonstration of Joule's Heating Effect**
To demonstrate Joule's heating effect experimentally, follow these steps:
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