Following gates section is connected in a complete suitable circuit.
For which of the following combination, bulb will glow (ON):
(A)A=0,B=1,C=1,D=1
(B)A=1,B=0,C=0,D=0✓ Correct
(C)A=0,B=0,C=0,D=1
(D)A=1,B=1,C=1,D=0
Answer: (B)
Solution
The bulb glows only if there is a potential difference across it, i.e. one of its terminals sits at logic 1 (high) and the other at logic 0 (low). Testing the given input combinations against the gate network, only A=1,B=0,C=0,D=0 produces a high output on one side of the bulb and a low on the other, so the bulb turns ON.
JEE Main · 2024 · 05 Apr 2024 · Shift 1 · Single correct option
