Answer: All inputs are 1.
- A At least one input is 1
- B Only one input is 1
- C All inputs are 1
- D Neither input is 1
Correct answer: C. All inputs are 1
Explanation: AND gate: output = 1 only when ALL inputs are 1. If any input is 0, 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.