Question 45: Semiconductors and Logic Gates

Question

Following gates section is connected in a complete suitable circuit.
For which of the following combination, bulb will glow (ON) :
![](https://app-content.cdn.examgoal.net/fly/@width/image/1lv7l2x4g/29a8a03c-0370-49d5-a440-3ca16699ceb8/402ae300-fecc-11ee-8116-e195dc03b165/file-1lv7l2x4h.png?format=png)

Accepted Answer

For bulb to glow, there should be low-high combination across the bulb.
If $A=1, B=0, C=0$ & $D=0$
$\overline{\overline{1}+1}=0 \quad \& \quad \overline{0}=1$
So, bulb will glow.

Answer

$\mathrm{A}=1, \mathrm{~B}=1, \mathrm{C}=1, \mathrm{D}=0$

Answer

$\mathrm{A}=1, \mathrm{~B}=0, \mathrm{C}=0, \mathrm{D}=0$

Answer

$\mathrm{A}=0, \mathrm{~B}=0, \mathrm{C}=0, \mathrm{D}=1$

Answer

$\mathrm{A}=0, \mathrm{~B}=1, \mathrm{C}=1, \mathrm{D}=1$

Semiconductors and Logic Gates

Following gates section is connected in a complete suitable circuit. For which of the following combination, bulb will glow (ON) :

Choose the correct answer: