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

Choices:  
A: 1  
B: 2  
C: 3  
D: 6    

Correct Answer is  A: 1  

Correct answer: A (1)

Why 1 is correct:
- A JFET symbol shows the gate making a junction directly to the channel (no gap).
- For a P-channel JFET, the arrow on the gate points out of the channel. Symbol 1 shows the gate touching the channel and the arrow pointing out, indicating a P-channel junction FET.

Why the others are incorrect:
- 2: Gate touches the channel (so it’s a JFET), but the arrow points into the channel. Arrow in = N-channel JFET, not P-channel.
- 3: The gate is insulated from the channel (a gap is shown), so this is a MOSFET, not a JFET.
- 6: Also shows an insulated gate (gap), so it’s a MOSFET, not a JFET.

Useful rules of thumb:
- JFET vs MOSFET: JFET gate touches the channel; MOSFET gate is separated by a gap (insulator).
- Arrow direction mnemonic: “Arrow points from P to N” ($P \to N$).
  - Arrow in to the channel ⇒ N-channel.
  - Arrow out of the channel ⇒ P-channel.