When more than one electric cell have to be used , they are joined to the electric circuit in such a way that

Options

A. the positive terminal of one electric cell is connected to the positive terminal of the another electric cell
B. the negative terminal of one electric cell is connected to the negative terminal of the another electric cell
C. the positive terminal of one electric cell is connected to the negative terminal of the another electric cell
D. both the cells are parallel to each other with similar terminals in same side .

Explanation

To answer the question, "When more than one electric cell have to be used, they are joined to the electric circuit in such a way that," we need to understand how to connect multiple cells in a circuit. Here’s a step-by-step explanation:

### Step-by-Step Solution:

1. **Understanding Electric Cells**: An electric cell has two terminals: a positive terminal (+) and a negative terminal (-). When connecting multiple cells, we need to consider how these terminals interact.

2. **Connecting Cells in Series**: When connecting more than one electric cell, they are typically connected in series. This means that the negative terminal of one cell is connected to the positive terminal of the next cell.

3. **Visualizing the Connection**:
- Assume we have four cells: C1, C2, C3, and C4.
- Connect the negative terminal of C1 to the positive terminal of C2.
- Then, connect the negative terminal of C2 to the positive terminal of C3.
- Finally, connect the negative terminal of C3 to the positive terminal of C4.

4. **Final Configuration**: The final configuration will look like this:
- C1 (+) to C2 (-)
- C2 (+) to C3 (-)
- C3 (+) to C4 (-)

5. **Conclusion**: Therefore, when more than one electric cell is used, they should be joined in such a way that the negative terminal of one cell is connected to the positive terminal of the next cell. This connection method ensures that the voltage adds up, providing a higher voltage output for the circuit.