JEE Main202225 Jul 2022Morning ShiftPhysicsSemiconductorsActual
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 :
Options
- AA B Y 0 0 0 1 0 0 0 1 0 1 1 1
- BA B Y 0 0 0 1 0 1 0 1 1 1 1 1
- CA B Y 0 0 0 1 0 0 0 1 0 1 1 0
- DA B Y 0 0 1 1 0 1 0 1 1 1 1 0
Correct answer
A. A B Y 0 0 0 1 0 0 0 1 0 1 1 1
Step-by-step 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 A B Y 0 0 0 0 1 0 1 0 0 1 1 1 Thus, given circuit is equivalent to an AND gate.