JEE Main 2022 · 25 Jul · Shift 1 · Physics Q50

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PhysicsSingle correct+4 / -1Question 50 of 90

In the circuit, the logical value of A = 1 or B = 1 when potential at A or B is 5 V and the logical value of A = 0 or B = 0 when potential at A or B is 0 V.

The truth table of the given circuit will be :

Inputs A and B each through a diode (D1, D2, cathodes towards the inputs) to a common node Y, which is connected through R to a +5 V supply referenced to V = 0.

Y = 0, 0, 0, 1 for AB = 00, 10, 01, 11

Y = 0, 1, 1, 1 for AB = 00, 10, 01, 11

Y = 0, 0, 0, 0 for AB = 00, 10, 01, 11

Y = 1, 1, 1, 0 for AB = 00, 10, 01, 11

Answer and worked solution

Official answer: A

Diode AND gate. Y is high only when both inputs are high: Y = 0, 0, 0, 1.

(A)

Topics:Logic gates

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JEE Main 2022 · 25 Jul · Shift 1, Physics question 50