*Question G4B02:
Which of the following is an advantage of an oscilloscope versus a digital voltmeter?*  

*Correct Answer is  D: Complex waveforms can be measured*  

### AI Response: (may contain errors)  

An oscilloscope is a versatile tool that provides a visual representation of electrical signals, which is particularly useful for analyzing complex waveforms. Here's why the correct answer is "Complex waveforms can be measured":

1. **Correct Answer: D - Complex waveforms can be measured**
   - An oscilloscope displays the waveform of a signal over time, allowing you to see the shape, amplitude, frequency, and any distortions or anomalies in the waveform. This is essential for analyzing signals that are not simple DC or AC voltages, such as modulated signals or signals with noise.

2. **Why the other choices are incorrect:**
   - **A: An oscilloscope uses less power**
     - This is incorrect because oscilloscopes typically consume more power than digital voltmeters due to their more complex circuitry and display systems.
   - **B: Complex impedances can be easily measured**
     - While oscilloscopes can help visualize signals, they are not primarily used for measuring impedance. Impedance measurements are typically done with specialized equipment like an impedance analyzer or an LCR meter.
   - **C: Greater precision**
     - Digital voltmeters are generally more precise for measuring voltage levels, especially for DC and low-frequency AC signals. They provide numerical readouts with high resolution, whereas oscilloscopes are better for visualizing waveforms.

In summary, the primary advantage of an oscilloscope over a digital voltmeter is its ability to display and analyze complex waveforms, making it an invaluable tool for diagnosing and understanding dynamic signal behavior.