Which of the following is the correct way of Setting a circuit

Options

A.
B.
C.
D.

Answer

To determine the correct way of setting up a circuit, let's analyze the options provided step by step.

### Step 1: Analyze Option 1
- **Description**: In option 1, there are two cells.
- **Reasoning**: The two cells are not in contact with each other.
- **Conclusion**: Since there is no connection between the cells, the circuit is incomplete. Therefore, current cannot flow, and this option is incorrect.

### Step 2: Analyze Option 2
- **Description**: In option 2, there are two cells connected to a bulb.
- **Reasoning**: The same terminals (positive to positive or negative to negative) of both cells are connected to each other.
- **Conclusion**: This connection does not allow for a complete circuit, as the cells are not properly connected to allow current to flow. Thus, this option is also incorrect.

### Step 3: Analyze Option 3
- **Description**: Option 3 also shows two cells connected to a bulb.
- **Reasoning**: Similar to option 2, the same terminals of both cells are connected.
- **Conclusion**: This results in an incomplete circuit, preventing current flow. Therefore, this option is incorrect as well.

### Step 4: Analyze Option 4
- **Description**: In option 4, one terminal of the bulb is connected to one terminal of a cell, and the other terminal of the bulb is connected to the other terminal of the cell.
- **Reasoning**: This setup connects the positive terminal of one cell to the negative terminal of the other, creating a complete circuit.
- **Conclusion**: Since this configuration allows current to flow through the bulb, it is the correct way to set up a circuit.

### Final Answer
The correct way of setting up a circuit is **Option 4**.

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