Exercise Electricity: Label The Picture and Its Functions | PDF ... - Free Printable

Problem Analysis:

The task involves labeling the components of a light bulb and explaining their functions. The image provided shows a diagram of a light bulb with several labeled parts, but the labels are blank. We need to identify each component and describe its function.

Solution:

#### Step 1: Identify the Components of a Light Bulb
A typical incandescent light bulb consists of several key components. Based on the diagram, we can label the following parts:

1. Filament: The thin wire inside the bulb that glows when electricity passes through it.
2. Supports (or Leads): Metal wires that hold the filament in place and connect it to the base.
3. Base: The bottom part of the bulb that connects to the electrical socket.
4. Glass Envelope: The outer glass covering that protects the filament and contains the gas or vacuum inside.
5. Tungsten Wire: A specific type of filament material used for its high melting point.
6. Contact Points: The points where the electrical current enters and exits the bulb.
7. Vacuum or Gas Filling: The space inside the bulb, often filled with an inert gas like argon or nitrogen to prevent oxidation of the filament.

#### Step 2: Label the Diagram
Using the above information, we can label the parts in the diagram as follows:

- Top Left: Contact Point
- Middle Left: Support (Lead)
- Top Right: Filament
- Middle Right: Support (Lead)
- Center Bottom: Filament (Tungsten Wire)
- Bottom Right: Base
- Outer Shell: Glass Envelope

#### Step 3: Explain the Functions
Now, let's explain the function of each labeled component:

1. Contact Point:
- Function: Connects the electrical circuit to the internal components of the bulb, allowing current to flow into the filament.

2. Support (Lead):
- Function: Holds the filament in place and provides a pathway for electrical current to reach the filament.

3. Filament:
- Function: Produces light when an electric current passes through it. The filament heats up to a high temperature, causing it to glow.

4. Base:
- Function: Serves as the connection point between the bulb and the electrical socket, allowing the bulb to be securely inserted and providing electrical contact.

5. Glass Envelope:
- Function: Protects the filament from external damage and contains the vacuum or inert gas inside the bulb, which prevents the filament from burning out quickly due to oxidation.

6. Tungsten Wire:
- Function: A specific type of filament material chosen for its high melting point and ability to emit light efficiently when heated.

7. Vacuum or Gas Filling:
- Function: Reduces oxidation of the filament and improves the bulb's longevity by preventing the tungsten from evaporating too quickly.

#### Final Answer:
Here is the completed table:

| Component | Its Function |
|--------------------|------------------------------------------------------------------------------|
| Contact Point | Connects the electrical circuit to the internal components of the bulb. |
| Support (Lead) | Holds the filament in place and provides a pathway for electrical current. |
| Filament | Produces light when an electric current passes through it. |
| Base | Connects the bulb to the electrical socket, providing secure insertion and electrical contact. |
| Glass Envelope | Protects the filament and contains the vacuum or inert gas inside the bulb. |
| Tungsten Wire | A specific filament material that emits light efficiently when heated. |
| Vacuum/Gas Filling | Prevents oxidation of the filament and improves bulb longevity. |

Final Answer:

\boxed{
\begin{array}{|c|c|}
\hline
\text{Component} & \text{Its Function} \\
\hline
\text{Contact Point} & \text{Connects the electrical circuit to the internal components of the bulb.} \\
\hline
\text{Support (Lead)} & \text{Holds the filament in place and provides a pathway for electrical current.} \\
\hline
\text{Filament} & \text{Produces light when an electric current passes through it.} \\
\hline
\text{Base} & \text{Connects the bulb to the electrical socket, providing secure insertion and electrical contact.} \\
\hline
\text{Glass Envelope} & \text{Protects the filament and contains the vacuum or inert gas inside the bulb.} \\
\hline
\text{Tungsten Wire} & \text{A specific filament material that emits light efficiently when heated.} \\
\hline
\text{Vacuum/Gas Filling} & \text{Prevents oxidation of the filament and improves bulb longevity.} \\
\hline
\end{array}
}