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GATE ECE 1997 | Question 2.3

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For a $\text{MOS}$ capacitor fabricated on a $p$-type semiconductor, strong inversion occurs when

  1. surface potential is equal to Fermi potential
  2. surface potential is zero
  3. surface potential is negative and equal to Fermi potential in magnitude
  4. surface potential is positive and equal to twice the Fermi potential

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