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In a PN- junction diode not connected to any circuit

1. The potential is the same everywhere
2. The P- type is a higher potential than the N -type side
3. There is an electric field at the junction directed from the N - type side to the P- type side
4. There is an electric field at the junction directed from the P- type side to the N- type side + 4 V P N 300  + 1 V PG #2

Correct answer: There is an electric field at the junction directed from the N - type side to the P- type side

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