Answer: 0.
- A 0
- B 1
- C undefined
- D oscillating
Correct answer: A. 0
Explanation: An AND gate outputs 1 only when all inputs are 1; with inputs 1 and 0 the output is 0.
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.