A 8.0V battery is made by joining 4, 2.0V cells. For this what will be the right combination?

Options

A.
B.
C.
D.

Explanation

To create an 8.0V battery using four 2.0V cells, we need to connect the cells in series. Here’s a step-by-step solution:

### Step 1: Understand the Voltage of Each Cell
Each cell has a voltage of 2.0V. We need to combine these cells to reach a total voltage of 8.0V.

### Step 2: Determine the Number of Cells Needed
To find out how many cells are needed to achieve 8.0V, we can use the formula:
\[ \text{Total Voltage} = \text{Number of Cells} \times \text{Voltage of Each Cell} \]
Let \( n \) be the number of cells:
\[ 8.0V = n \times 2.0V \]
Solving for \( n \):
\[ n = \frac{8.0V}{2.0V} = 4 \]
This means we need all four cells to achieve 8.0V.

### Step 3: Connect the Cells in Series
To connect the cells in series, we connect the positive terminal of one cell to the negative terminal of the next cell. Here’s how to do it:
- Connect the positive terminal of the first cell to the negative terminal of the second cell.
- Connect the positive terminal of the second cell to the negative terminal of the third cell.
- Connect the positive terminal of the third cell to the negative terminal of the fourth cell.

### Step 4: Identify the Total Voltage
When cells are connected in series, the total voltage is the sum of the voltages of each cell:
\[ \text{Total Voltage} = 2.0V + 2.0V + 2.0V + 2.0V = 8.0V \]

### Step 5: Conclusion
Thus, by connecting all four 2.0V cells in series, we achieve a total voltage of 8.0V.

### Final Answer
The right combination to create an 8.0V battery using four 2.0V cells is to connect them in series.

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