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In a p-n junction diode not connected to any circuit

Options

  1. Athe potential is the same everywhere
  2. Bthe p-type side is at a higher potential than the n-type side
  3. Cthere is an electric field at the junction directed from the n-side to the p-side
  4. Dthere is an electric field at the junction directed from the p-type side to the n-type side

Correct answer

C. there is an electric field at the junction directed from the n-side to the p-side

Step-by-step solution

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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