The truth table for a circuit is given by:

$A$ $B$ $C$ $Y$ (Output)

$1$ $X$ $1$ $1$

$0$ $1$ $X$ $1$

All other cases $0$

Here, $X$ represents either $0$ or $1$ . $A,B,$ and $C$ are the inputs. Which of the following is the correct circuit?

1.

2.

3.

4.

Subtopic: Logic gates |

53%

From NCERT

1

2

3

4

To unlock all the explanations of this course, you need to be enrolled.

Hints

To unlock all the explanations of this course, you need to be enrolled.

Q11:

A simple

p - n

$\mathrm{p\text-n}$ junction diode follows the law:

i (current) = i_{0} e^{q V / k T},

$i\text{(current)}=i_0e^{qV/kT},$ for large currents in forward bias.
Here,

T =

$T=$ absolute temperature,

V =

$V=$ voltage across the diode,

k =

$k=$ Boltzmann's constant and

i_{0} =

$i_0=$ the drift current.
Then, the differential resistance of the diode

(\frac{d V}{d i})

$\left(\dfrac{dV}{di}\right)$ is given by:
1.

(constant) i

$\text{(constant)}i$
2.

(constant) i^{2}

$\text{(constant)}i^2$
3.

\frac{constant}{i}

$\dfrac{\text{constant}}{i}$
4.

(constant) e^{- β i}, β -constant

$\text{(constant)}e^{-\beta i},~\beta\text{-constant}$

Subtopic: PN junction |

From NCERT

1

2

3

4

To unlock all the explanations of this course, you need to be enrolled.

Hints

To unlock all the explanations of this course, you need to be enrolled.

Q12:

Which of the following represents a circuit that gives an output (i.e. true) when both its inputs are equal?

1.
2.
3.
4.

Subtopic: Logic gates |

57%

From NCERT

1

2

3

4

To unlock all the explanations of this course, you need to be enrolled.

Hints

To unlock all the explanations of this course, you need to be enrolled.

Q13:

The current-voltage characteristic of an ideal

p - n

$\mathrm{p \text{-}n}$ junction diode is given by the graph as shown in the following figure:

This diode is connected with a resistance of

5 Ω

$5~\Omega$ in series with it as shown below:

Which of the following shows the dependence of the voltage

V_{A B}

$V_{AB}$ and the current

i,

$i,$ when the diode is forward-biased?
(

V_{A B}

$V_{AB}$ in volt,

i

$i$ in ampere)

1.	$V_{A B}=i\cdot5+0.6$
2.	$V_{A B}=i\cdot5-0.6$
3.	$V_{A B}=i\cdot5+(0.6-5)$
4.	$V_{A B}=i\cdot5+\left(0.6+5\right)$

Subtopic: PN junction |

From NCERT

1

2

3

4

To unlock all the explanations of this course, you need to be enrolled.

Hints

To unlock all the explanations of this course, you need to be enrolled.

Q14:

The voltage

V_{A B} = 20 V

$V_{AB}=20~\text{V}$ at its peak value, and is sinusoidal in time. The current

i

$i$ (in amperes), when plotted as a function of time, is given by:
(consider the diodes as ideal.)

1.		2.
3.		4.

Subtopic: PN junction |

From NCERT

1

2

3

4

To unlock all the explanations of this course, you need to be enrolled.

Hints

To unlock all the explanations of this course, you need to be enrolled.

Q15:

The circuit shown in figure is given an input signal

V_{i},

$V_i,$ which varies with time and the corresponding output is

V_{o} .

$V_o.$ Then,

1.	$V_o=V_i+E$
2.	$V_o=V_i-E$
3.	$V_o=V_i,$ only when $V_i>E$
4.	$V_o=V_i,$ only when $V_i<E$

Subtopic: PN junction |

From NCERT

1

2

3

4

To unlock all the explanations of this course, you need to be enrolled.

Hints

To unlock all the explanations of this course, you need to be enrolled.

Q16:

Under what conditions will diode

D_{1}

$D_1$ conduct?

1.

V_{A} > V_{B} + V_{0}

$V_A>V_B+V_0$
2.

V_{A} < V_{B} + V_{0}

$V_A<V_B+V_0$
3.

V_{A} > V_{B} - V_{0}

$V_A>V_B-V_0$
4.

V_{A} < V_{B} - V_{0}

$V_A<V_B-V_0$

Subtopic: PN junction |

65%

From NCERT

1

2

3

4

To unlock all the explanations of this course, you need to be enrolled.

Hints

To unlock all the explanations of this course, you need to be enrolled.

Q17:

In the circuit shown in the adjacent diagram,

D_{1}, D_{2}

$D_1,D_2$ are ideal diodes and

r

$r$ 's are small resistances. Then:

1.	no current flows in the circuit
2.	current flows anticlockwise
3.	current flows clockwise
4.	current only flows through $D_2$ and not through $D_1$

Subtopic: Applications of PN junction |

66%

From NCERT

1

2

3

4

To unlock all the explanations of this course, you need to be enrolled.

Hints

To unlock all the explanations of this course, you need to be enrolled.

Q9:

A voltage

V_{A B}

$V_{AB}$ is applied to the left side input and the potential differences

V_{A X}

$V_{AX}$ and

V_{X Y}

$V_{XY}$ are measured. Assume the diodes are ideal i.e., there is no potential difference across the diodes in forward bias. Which of the following is true?

1.

If V_{A B} > 0, V_{A X} > 0

$\text{If}~V_{AB}>0, V_{AX}>0$
2.

If V_{A B} > 0, V_{X Y} > 0

$\text{If}~V_{AB}>0, V_{XY}>0$
3.

If V_{A B} < 0, V_{X Y} > 0

$\text{If}~V_{AB}<0, V_{XY}>0$
4.

If V_{A B} < 0, V_{A X} > 0

$\text{If}~V_{AB}<0, V_{AX}>0$

Subtopic: PN junction |

From NCERT

1

2

3

4

To unlock all the explanations of this course, you need to be enrolled.

Hints

To unlock all the explanations of this course, you need to be enrolled.

Q8:

Assume that the threshold voltage of a diode is

0.7

$0.7$ V, and the forward resistance is negligible.

The current through the circuit is:
1.

40

$40$ mA
2.

54

$54$ mA
3.

33

$33$ mA
4.

26

$26$ mA

Subtopic: PN junction |

58%

From NCERT

1

2

3

4

To unlock all the explanations of this course, you need to be enrolled.

Hints

To unlock all the explanations of this course, you need to be enrolled.

The truth table for a circuit is given by:

$A$ $B$ $C$ $Y$ (Output)

$1$ $X$ $1$ $1$

$0$ $1$ $X$ $1$

All other cases $0$

Here, $X$ represents either $0$ or $1$ . $A,B,$ and $C$ are the inputs. Which of the following is the correct circuit?

1.

2.

3.

4.

NEET Information

courses

Company

Botany Questions

Chemistry Questions

Physics Questions

Zoology Questions

$A$	$B$	$C$	$Y$ (Output)
$1$	$X$	$1$	$1$
$0$	$1$	$X$	$1$
All other cases			$0$

​The truth table for a circuit is given by: AAA BBB CCC YYY (Output) 111 XXX 111 111 000 111 XXX 111 All other cases 000 Here, XXX represents either 000 or 111. A,B,A,B,A,B, and CCC are the inputs. Which of the following is the correct circuit? ​ 1. 2. 3. 4.

Add Note

Highlight in NCERT

Add Note

Highlight in NCERT

Add Note

Highlight in NCERT

Add Note

Highlight in NCERT

Add Note

Highlight in NCERT

Add Note

Highlight in NCERT

Add Note

Highlight in NCERT

Add Note

Highlight in NCERT

Add Note

Highlight in NCERT

Add Note

Highlight in NCERT

NEET Information

courses

Company

Botany Questions

Chemistry Questions

Physics Questions

Zoology Questions

The truth table for a circuit is given by:

$A$ $B$ $C$ $Y$ (Output)

$1$ $X$ $1$ $1$

$0$ $1$ $X$ $1$

All other cases $0$

Here, $X$ represents either $0$ or $1$ . $A,B,$ and $C$ are the inputs. Which of the following is the correct circuit?

1.

2.

3.

4.