Which circuit diagram shows voltmeter V and ammeter A correctly positioned to measure the total potential difference of the circuit and the current through each resistor?

Options

A.
B.
C.
D.

Answer

To solve the question regarding the correct positioning of a voltmeter and ammeter in a circuit diagram, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Function of the Instruments**:
- A **voltmeter** measures the potential difference (voltage) across two points in a circuit and must be connected in **parallel** with the component across which the voltage is to be measured.
- An **ammeter** measures the current flowing through a circuit and must be connected in **series** with the circuit elements.

2. **Analyze the Options**:
- We have four options to consider. We need to determine which option correctly places the voltmeter in parallel and the ammeter in series.

3. **Evaluate Each Option**:
- **Option 1**: The voltmeter is connected in parallel and the ammeter is connected in series.
- This option is correct because it follows the rules for connecting these instruments.

- **Option 2**: The voltmeter is connected in series and the ammeter is connected in parallel.
- This option is incorrect because the voltmeter should not be in series.

- **Option 3**: Both the voltmeter and ammeter are connected in series.
- This option is incorrect because the voltmeter must be in parallel.

- **Option 4**: Similar to option 3, both are connected in series.
- This option is also incorrect for the same reason.

4. **Conclusion**:
- After evaluating all options, we find that **Option 1** is the only correct configuration where the voltmeter is in parallel and the ammeter is in series.

### Final Answer:
The correct circuit diagram is **Option 1**.