*Question E7G01:
What is the typical output impedance of an op-amp?*  

*Correct Answer is  A: Very low*  

### AI Response: (may contain errors)  

The typical output impedance of an operational amplifier (op-amp) is very low. Here's a breakdown of why this is the correct answer and why the other choices are incorrect.

### Correct Answer: Very Low

- **Explanation**: Op-amps are designed to drive loads effectively, which requires them to have a low output impedance. This low impedance allows the op-amp to deliver maximum power to the load and minimizes the voltage drop across the output when a load is connected. Typically, the output impedance of an op-amp is in the range of a few ohms to tens of ohms.

### Why Other Choices Are Incorrect:

- **A: Very high**  
  - **Explanation**: A very high output impedance would limit the op-amp's ability to drive loads effectively, leading to significant voltage drops and poor performance. This is contrary to the design goals of op-amps.

- **C: 100 ohms**  
  - **Explanation**: While 100 ohms might seem low, it is still higher than the typical output impedance of most op-amps, which is usually much lower than this value. Therefore, this choice does not accurately reflect the typical characteristics of op-amps.

- **D: 10,000 ohms**  
  - **Explanation**: An output impedance of 10,000 ohms is considered very high for an op-amp. Such a high impedance would severely limit the op-amp's ability to drive loads and is not representative of standard op-amp designs.

### Summary

- **Typical Output Impedance**: Very low (a few ohms to tens of ohms)
- **Key Point**: Low output impedance is essential for effective load driving and maintaining signal integrity.

Understanding the output impedance of op-amps is crucial for designing circuits that require precise signal amplification and control.