A and B are the inputs for the given logic gate. The output Y will be:

1.		2.
3.		4.

A Zener diode is shown in the following circuit diagram. When the source voltage fluctuates such that $V>V_z$, then:
   

1. all the current I₁, I₂ and I₃ change.

2. only I₁ and I₂ change and I₃ remains constant.

3. only I₁ and I₃ change and I₂ remains constant.

4. all the currents remain constant.

The net charges on $\mathrm{p}$-type semiconductor and $\mathrm{n}$-type semiconductor are, respectively:

1. Positive, negative

2. Negative, positive

3. Positive, positive

4. Zero, zero

In which of the following condition, diffusion current in $p-n$ junction is more than drift current?

What is the reading of the ideal ammeters A₁ and A₂ connected in the given circuit diagram, if $\mathrm{p}-\mathrm{n}$ junction diodes are ideal?

1. 2 A and zero

2. 3 A and 2 A

3. 2 A and 3 A

4. Zero and 2 A

If in a reverse-biased $p-n$ junction, an increase in carrier concentration takes place due to the creation of new hole-electron pairs by the light of wavelength less than or equal to 620 nm, then the bandgap is:

1. 1 eV

2. 2 eV

3. 20 eV

4. 0.2 eV

Which of the following graphs may correctly represent the variation of current (l) with potential difference (V) across a zener diode?

1.		2.
3.		4.

Which of the following statements is incorrect about LED?

A combination of logic gates is shown in the circuit. If \(A\) is at \(0\) V and \(B\) is at \(5\) V, then the potential of \(R\) is:

1. \(0\) V
2. \(5\) V
3. \(10\) V
4. Any of these

How many minimum number of NOR gates are required to obtain an AND gate?

1. One

2. Two

3. Three

4. Five