All Exams Test series for 1 year @ ₹349 only
Question

For the series diode configuration of the given figure, determine $V_D$ and $I_D$.

This question was previously asked in
CUET PG 2026 Agri-Business Management Question Paper (25-Mar-2026) (Shift 2)
The correct answer is
0.4 V and 0 A.

To determine the diode voltage \(V_D\) and the current \(I_D\) for the given series diode configuration, we follow these steps:

Step 1: Understanding the Circuit Configuration

The circuit consists of a silicon diode and a resistor in series. The voltage across the circuit is given as \(+0.4 \, \text{V}\), and the resistor value is \(1.3 \, \text{k}\Omega\).

Step 2: Analyzing the Diode's Behavior

For a silicon diode, the forward voltage drop is typically about \(0.7 \, \text{V}\) when it is conducting. However, in this circuit, the supply voltage is only \(0.4 \, \text{V}\) which is less than the typical forward voltage drop of a silicon diode (\(0.7 \, \text{V}\)).

Step 3: Determining the Diode Voltage \(V_D\)

Since the supply voltage is insufficient to forward-bias the diode (i.e., it does not reach the typical \(0.7 \, \text{V}\) required), the diode remains in the non-conducting state. Thus:

\(V_D = 0.4 \, \text{V}\).

Step 4: Calculating the Current \(I_D\)

Because the diode is not conducting (in the off state), the current \(I_D\) is \(0 \, \text{A}\). Therefore:

\(I_D = 0 \, \text{A}\).

Step 5: Conclusion

Based on the above analysis, the correct values for \(V_D\) and \(I_D\) are \(0.4 \, \text{V}\) and \(0 \, \text{A}\) respectively. Therefore, the correct answer is: 0.4 V and 0 A.

Was this answer helpful?

Similar Questions

  1. If 8085 microprocessor adds 87H and 79H, then :
  2. The content of register (B) and register (C) of 8085 microprocessor are 0AH and 0BH. It is desired to multiply the content of register B and register C and store the results in accumulator. A part of 8085 program for this purpose is given as :
    MVI A, 00H
    LOOP ; _ _ _ _ _
    _ _ _ _ _ _ _ _ _
    _ _ _ _ _ _ _ _ _
    HLT END
    A sequence of instructions to complete the program would be :
  3. The sequence of steps performed by microprocessor to fetch the data byte from memory :
    A. The byte is placed in the instruction decoder of the microprocessor.
    B. The byte from the memory location is placed on data bus.
    C. The control unit sends the control signal $\overline{\text{RD}}$ to enable the memory chip.
    D. The microprocessor places the 16-bit memory address from program counter on the address bus.
    Choose the correct answer from the options given below :
  4. Sequence of steps in 8085 microprocessor interrupt execution :
    A. Interrupt acknowledged
    B. Program counter content saved
    C. Control transfered to ISR
    D. Interrupt vector is read
    Choose the correct answer from the options given below :
  5. Consider the following statements regarding the 8085 microprocessor :
    A. The 8085 is an 8-bit microprocessor.
    B. It has a 16-bit address bus, allowing it to access 64 KB of memory.
    C. It has 40 pins.
    D. It uses a multiplexed address/data bus.
    Choose the correct answer from the options given below :
  6. In 8085 microprocessor, which of the following are 2-byte instructions ?
    A. MOV C, A
    B. MVI A, 32H
    C. LDA 2050H
    D. JMP 2085H
    E. ADD B
    Choose the correct answer from the options given below :
  7. Match List - I with List - II.
    List - I
    (Addressing Modes)
    List - II
    (Instruction)
    A. Immediate AddressingI. LDAX B
    B. Register AddressingII. OUT 01H
    C. Direct AddressingIII. MVI B, 37H
    D. Indirect AddressingIV. MOV A, B
    Choose the correct answer from the options given below :
  8. Match List - I with List - II.
    List - IList - II
    (Memory)(Characteristic)
    A. ROMI. Volatile, Fast, Expensive
    B. EPROMII. UV erasable
    C. EEPROMIII. Electrically erasable
    D. SRAMIV. Non-Volatile, permanent data

    Choose the correct answer from the options given below :
  9. Match List - I with List - II.
    List - IList - II
    (Bus/Logic)(Function/Characteristic)
    A. Address busI. Carries read/write signals, timing signals, and interrupt signals
    B. Data busII. A three-state output that can be high, low, or high-impedance
    C. Control busIII. Unidirectional lines used by CPU to point to a memory location or I/O device
    D. Tristate logicIV. Bidirectional lines used for transferring data between the CPU and memory

    Choose the correct answer from the options given below :
  10. The most fundamental physical principle that allows light to be transmitted along the optical fiber without significant loss :

Important Questions from Miscellaneous

  1. Which of the following scheduler/schedulers is/are also called CPU scheduler ?
    (A). Short Term Scheduler
    (B). Long Term Scheduler
    (C). Medium Term Scheduler
    (D). Asymmetric Scheduler
    Choose the correct answer from the options given below:
  2. A situation where two or more processes are blocked, waiting for resources held by each other is called:
  3. External fragmentation occurs ________.
  4. Which disk scheduling algorithm looks for the track closest to the current head position?
  5. Which CPU scheduling algorithm prefers the process with the shortest burst time?
Need Expert Advice?
Upcoming Exams
GATE
February 06, 2027
Test Series
CUET PG img
CUET
CUET PG Psychology (HUQP20) 2026 Mock Test Series
10 Tests
753 Attempts
3.7(14)
English
More Questions from CUET PG

Start Your Preparation with Prepp Mobile App

Download the app from Google Play & App Store
Download the app from Google Play & App Store
Prepp Mobile App