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  4. 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. <img class=img-fluid question-image alt=image src=https://cdn.tardigrade.in/img/question/physics/4870c6317428255411766725e448fe8b-.png /> The truth table of the given circuit will be :

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Q. 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 $0\, V$.
image
The truth table of the given circuit will be :

JEE MainJEE Main 2022Semiconductor Electronics: Materials Devices and Simple Circuits

Solution:

When both $A$ and $B$ have logical value ' $1$ '
both diode are reverse bias and current will flow in resistor hence output will be $5$ volt i.e. logical value ' $1$ '.
In all other case conduction will take place, hence output will be zero volt i.e. logical value ' $0$ '.
So truth table is
image