A logic gate circuit has two inputs A and B and output Y. The voltage waveforms of A, B and Y are shown below.
Fig. Logic gate circuit
The logic gate circuit is :
A logic gate circuit has two inputs A and B and output Y. The voltage waveforms of A, B and Y are shown below.
The logic gate circuit is :
- AND gate
- OR gate
- NOR gate
- NAND gate
The Correct Option is A
Approach Solution - 1
To determine the logic gate circuit, we need to analyze the given voltage waveforms for inputs A, B, and output Y:
Fig. Logic gate circuit
From the waveform:
- Observe when both inputs A and B are high (1), the output Y is also high (1).
- When either A or B is low (0), the output Y is low (0).
This behavior is consistent with an AND gate, which outputs high only when all its inputs are high.
Verification Against Options:
- AND gate: Matches the observed behavior (correct).
- OR gate: Would output high if any input is high (does not match).
- NOR gate: Inverse of OR gate, would output low if any input is high (does not match).
- NAND gate: Inverse of AND gate, would output low only if all inputs are high (does not match).
Therefore, the logic gate circuit is indeed an AND gate.
Approach Solution -2
The correct answer is (A) : AND gate
On the basis of given graph, following table is possible.
| A | B | C |
| 0 | 0 | 0 |
| 1 | 1 | 1 |
| 0 | 1 | 0 |
| 1 | 0 | 0 |
From waveforms and above table, it is an AND gate.
Top Questions on Logic gates
- For the given logic gate, find the output function.
- JEE Main - 2026
- Physics
- Logic gates
- Which logic gate is given in the figure?
- JEE Main - 2026
- Physics
- Logic gates
- In the figure the LED will glow for input \(A,B,C,D\) (\(0\) is low potential and \(1\) is high potential).
- JEE Main - 2026
- Physics
- Logic gates
- Let \( p \) and \( q \) be any two propositions. Consider the following propositional statements.
S1: \( p \rightarrow q \), S2: \( \neg p \land q \), S3: \( \neg p \lor q \), S4: \( \neg p \lor \neg q \)
where \( \land \) denotes conjunction (AND operation), \( \lor \) denotes disjunction (OR operation), and \( \neg \) denotes negation (NOT operation).
(Note: \( \equiv \) denotes logical equivalence)
Which one of the following options is correct? Which of the following circuits has the same output as that of the given circuit?
- JEE Main - 2025
- Physics
- Logic gates
Questions Asked in JEE Main exam
- For two identical cells each having emf \(E\) and internal resistance \(r\), the current through an external resistor of \(6\,\Omega\) is the same when the cells are connected in series as well as in parallel. The value of the internal resistance \(r\) is ________ \(\Omega\).
- JEE Main - 2026
- Current electricity
- For three unit vectors \( \vec a, \vec b, \vec c \) satisfying \[ |\vec a-\vec b|^2 + |\vec b-\vec c|^2 + |\vec c-\vec a|^2 = 9 \] and \[ |2\vec a + k\vec b + k\vec c| = 3, \] the positive value of \( k \) is:
- JEE Main - 2026
- Vector Algebra
In the given figure, the blocks $A$, $B$ and $C$ weigh $4\,\text{kg}$, $6\,\text{kg}$ and $8\,\text{kg}$ respectively. The coefficient of sliding friction between any two surfaces is $0.5$. The force $\vec{F}$ required to slide the block $C$ with constant speed is ___ N.
(Given: $g = 10\,\text{m s}^{-2}$)
- JEE Main - 2026
- Rotational Mechanics
- The system of linear equations
$x + y + z = 6$
$2x + 5y + az = 36$
$x + 2y + 3z = b$
has- JEE Main - 2026
- Matrices and Determinants
Method used for separation of mixture of products (B and C) obtained in the following reaction is:
- JEE Main - 2026
- p -Block Elements
Concepts Used:
Logic Gates
AND Gate
It is the gate, where a circuit performs an AND operation. It has n number of input where (n >= 2) and one output.
OR Gate
It is the gate, where a circuit performs an OR operation. It has n number of input where (n >= 2) and one output.
NOT Gate
An inverter is also called NOT Gate. It has one input and one output where the input is A and the output is Y.
NAND Gate
A NAND operation is also called a NOT-AND operation. It has n number of input where (n >= 2) and one output.
NOR Gate
A NOR operation is also called a NOT-OR operation. It has n number of input where (n >= 2) and one output.
XOR Gate
XOR or Ex-OR gate is a specific type of gate that can be used in the half adder, full adder, and subtractor.
XNOR Gate
XNOR gate is a specific type of gate, which can be used in the half adder, full adder, and subtractor. The exclusive-NOR gate is flattened as an EX-NOR gate or sometimes as an X-NOR gate. It has n number of input (n >= 2) and one output.