Electric Current and its Effects: Symbols of Electric Components Used in Circuit Diagrams

Problem Description:

The task involves identifying and matching the symbols of various electrical components in a circuit diagram. The table provided lists five electrical components along with their images and symbols. The goal is to ensure that the correct symbols are matched with the corresponding components.

Solution:

#### Step 1: Understand the Components and Their Symbols
1. Electric Cell: This is a single unit that generates electric current. Its symbol typically consists of two parallel lines of different lengths, with the longer line representing the positive terminal and the shorter line representing the negative terminal.
- Symbol: `─|─`

2. Electric Bulb: This is a device that converts electrical energy into light and heat. Its symbol resembles a curved line or a sideways "C" shape.
- Symbol: `~`

3. Switch in 'ON' Position: A switch in the 'ON' position allows current to flow through the circuit. Its symbol shows two lines connected, indicating continuity.
- Symbol: `──`

4. Switch in 'OFF' Position: A switch in the 'OFF' position breaks the circuit, preventing current from flowing. Its symbol shows two lines not connected, indicating discontinuity.
- Symbol: `── ──`

5. Battery: A battery is a group of cells connected in series to provide a higher voltage. Its symbol consists of multiple pairs of parallel lines (longer and shorter), representing multiple cells.
- Symbol: `──|──|──`

#### Step 2: Match the Components with Their Symbols
Using the descriptions above, we can match each component with its correct symbol:

1. Electric Cell:
- Image: A single cell.
- Symbol: `─|─`

2. Electric Bulb:
- Image: A light bulb.
- Symbol: `~`

3. Switch in 'ON' Position:
- Image: A switch with the contacts touching, allowing current to flow.
- Symbol: `──`

4. Switch in 'OFF' Position:
- Image: A switch with the contacts separated, breaking the circuit.
- Symbol: `── ──`

5. Battery:
- Image: A multi-cell battery.
- Symbol: `──|──|──`

#### Final Answer:
The completed table with the correct symbols is as follows:

| Sr. No. | Electric Component | Image | Symbol |
|---------|---------------------|-------|--------|
| 1 | Electric Cell |  | `─|─` |
| 2 | Electric Bulb |  | `~` |
| 3 | Switch in 'ON' Position |  | `──` |
| 4 | Switch in 'OFF' Position |  | `── ──` |
| 5 | Battery |  | `──|──|──` |

Explanation:

- Each symbol represents a specific function in an electrical circuit. For example, the electric cell symbol (`─|─`) indicates a single source of voltage, while the battery symbol (`──|──|──`) indicates multiple cells connected in series.
- The switch symbols (`──` for 'ON' and `── ──` for 'OFF') show whether the circuit is continuous or broken.
- The bulb symbol (`~`) represents a resistive load that converts electrical energy into light and heat.

This ensures clarity and correctness in circuit diagrams, making it easier to understand and analyze electrical circuits.

Final Answer:
\boxed{
\begin{array}{|c|c|c|c|}
\hline
\text{Sr. No.} & \text{Electric Component} & \text{Image} & \text{Symbol} \\
\hline
1 & \text{Electric Cell} & \text{} & \text{─|─} \\
\hline
2 & \text{Electric Bulb} & \text{} & \text{~} \\
\hline
3 & \text{Switch in 'ON' Position} & \text{} & \text{──} \\
\hline
4 & \text{Switch in 'OFF' Position} & \text{} & \text{── ──} \\
\hline
5 & \text{Battery} & \text{} & \text{──|──|──} \\
\hline
\end{array}
}