Draw a labelled circuit diagram of a simple electric motor and explain its working. In what way these simple electric motors are different from commercial motors?

Explanation

### Step-by-Step Solution

#### Step 1: Draw the Circuit Diagram of a Simple Electric Motor

1. **Components**: Start by identifying the main components of a simple electric motor:
- A battery (power source)
- A switch (key)
- Two brushes (X and Y)
...