*Question E6A11:
In Figure E6-1, which is the schematic symbol for a P-channel junction FET?*  

*Correct Answer is  A: 1*  

### AI Response: (may contain errors)  

In the context of the Extra Class exam, let's break down the question regarding the schematic symbol for a P-channel junction FET (Field Effect Transistor).

### Correct Answer: A (1)

1. **Why the correct answer is correct:**
   - The schematic symbol for a P-channel FET typically features an arrow pointing towards the gate terminal. This indicates that the current flows into the gate when the device is in operation. In the case of a P-channel FET, the arrow points towards the gate, which is characteristic of P-type devices.

2. **Why the other choices are incorrect:**
   - **B (2)**: This symbol likely represents an N-channel FET, where the arrow points away from the gate, indicating that current flows out of the gate.
   - **C (3)**: This symbol may represent a different type of transistor or a component that does not correspond to a P-channel FET. It does not have the correct arrow orientation.
   - **D (6)**: This symbol could represent a different electronic component entirely, such as a bipolar junction transistor (BJT) or another type of FET, which does not match the characteristics of a P-channel FET.

### Useful Rules of Thumb:
- **FET Symbols**: 
  - For P-channel FETs, the arrow on the source terminal points towards the gate.
  - For N-channel FETs, the arrow points away from the gate.
  
- **Identifying FET Types**: 
  - Remember that the direction of the arrow in the symbol indicates the type of charge carrier: 
    - P-channel = arrow in (towards the gate)
    - N-channel = arrow out (away from the gate)

This understanding of schematic symbols is crucial for interpreting circuit diagrams and understanding how different components function within a circuit.