*Question G4B09:
When is an analog multimeter preferred to a digital multimeter?*  

*Correct Answer is  D: When adjusting circuits for maximum or minimum values*  

### AI Response: (may contain errors)  

When adjusting circuits for maximum or minimum values, an analog multimeter is preferred because the needle movement provides a continuous visual indication of changes. This makes it easier to observe trends and find peaks or nulls in the circuit's behavior.

### Explanation:

1. **Correct Answer (D): When adjusting circuits for maximum or minimum values**
   - **Reason**: The analog multimeter's needle provides a real-time, continuous display of changes, which is helpful for tuning circuits to their optimal performance. The smooth movement of the needle allows you to see gradual changes and easily identify the point of maximum or minimum value.

2. **Incorrect Choices**:
   - **A: When testing logic circuits**
     - **Reason**: Digital multimeters are better suited for logic circuits because they can accurately measure the discrete voltage levels (e.g., 0V and 5V) used in digital logic.
   - **B: When high precision is desired**
     - **Reason**: Digital multimeters generally offer higher precision and accuracy compared to analog multimeters, as they provide exact numerical readings.
   - **C: When measuring the frequency of an oscillator**
     - **Reason**: Frequency measurement is typically beyond the capability of an analog multimeter. Digital multimeters with frequency measurement functions are more appropriate for this task.

### Summary:
Analog multimeters are advantageous for tasks requiring observation of trends or adjustments, such as tuning for maximum or minimum values, due to their continuous needle movement. For tasks requiring precision, logic testing, or frequency measurement, digital multimeters are more suitable.