Answer: Inversion layer forms (channel becomes conducting).
- A Significant gate leakage current begins to flow through the oxide
- B Inversion layer forms (channel becomes conducting)
- C The drain current becomes equal to the supply current
- D The source and drain terminals become directly shorted together
Correct answer: B. Inversion layer forms (channel becomes conducting)
Explanation: Threshold voltage Vth: minimum gate-source voltage to create conducting channel (inversion layer) between source and drain.
Conductors have overlapping bands, semiconductors have a small energy gap that can be bridged by heat or doping, and insulators have a large gap that blocks conduction.
Concept context
Band theory, p-n junction, diodes, transistors, logic gates, and integrated circuits.