*Question E4B06:
How much power is being absorbed by the load when a directional power meter connected between a transmitter and a terminating load reads 100 watts forward power and 25 watts reflected power?*  

*Correct Answer is  D: 75 watts*  

### AI Response: (may contain errors)  

To determine the power absorbed by the load, we need to consider both the forward power and the reflected power. The power absorbed by the load is the forward power minus the reflected power.

The formula to calculate the absorbed power ($P_{\text{absorbed}}$) is:  
$$P_{\text{absorbed}} = P_{\text{forward}} - P_{\text{reflected}}$$  
where:
- $P_{\text{forward}} = 100$ watts (as given)
- $P_{\text{reflected}} = 25$ watts (as given)

Substituting the given values:  
$$P_{\text{absorbed}} = 100 \, \text{watts} - 25 \, \text{watts} = 75 \, \text{watts}$$

Therefore, the correct answer is 75 watts (Choice D).

### Explanation of Incorrect Choices:
- **Choice A: 100 watts**  
  This choice assumes that all the forward power is absorbed by the load, ignoring the reflected power. It does not account for the power that is reflected back towards the transmitter.

- **Choice B: 125 watts**  
  This choice incorrectly adds the forward and reflected power, which is not how power absorption is calculated. The reflected power should be subtracted, not added.

- **Choice C: 112.5 watts**  
  This choice might be a result of a miscalculation or misunderstanding of the power reflection concept. It does not correctly apply the formula for absorbed power.

### Key Points:
- Always subtract the reflected power from the forward power to find the absorbed power.
- Reflected power represents energy that is not absorbed by the load and is instead sent back towards the source.