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Question: Answered & Verified by Expert
In a p-n junction diode not connected to any circuit
PhysicsSemiconductorsJEE Main
Options:
  • A the potential is the same everywhere
  • B the p-type side is at a higher potential than the n-type side
  • C there is an electric field at the junction directed from the n-side to the p-side
  • D there is an electric field at the junction directed from the p-type side to the n-type side
Solution:
2873 Upvotes Verified Answer
The correct answer is: there is an electric field at the junction directed from the n-side to the p-side
At the junction, a potential barrier/depletion layer is formed, with n-side at higher potential and p-side at lower potential. Therefore, there is an electric field at the junction directed from the n-side to the p-side.

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