Question:
Given below are V versus I graphs for different types of p-n junction diodes marked A, B, C, and D.
The correct sequence of graphs corresponding to forward biased p-n junction; Zener
diode; Photo diode and Solar cell in order is _________.
Fill in the blank with the correct answer from the options given below.
Given below are V versus I graphs for different types of p-n junction diodes marked A, B, C, and D.
The correct sequence of graphs corresponding to forward biased p-n junction; Zener
diode; Photo diode and Solar cell in order is _________.
Fill in the blank with the correct answer from the options given below.
The correct sequence of graphs corresponding to forward biased p-n junction; Zener
diode; Photo diode and Solar cell in order is _________.
Fill in the blank with the correct answer from the options given below.
Updated On: Mar 27, 2026
(A), (C), (B), (D)
(D), (C), (A), (B)
- (B), (A), (D), (C)
- (C), (B), (D), (A)
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The Correct Option is B
Solution and Explanation
In this problem, we need to identify which V-I graph corresponds to each type of p-n junction diode: forward-biased p-n junction, Zener diode, photodiode, and solar cell. Let's analyze the characteristics of each device to find the correct order:
- Forward-biased p-n junction diode: This will have an exponential V-I relationship where the current increases rapidly after exceeding a threshold voltage (forward voltage).
- Zener diode: Operates in reverse bias, and the V-I graph will show a sharp increase in reverse current after the breakdown voltage is reached.
- Photodiode: Typically operates in reverse bias. The current (reverse current) increases slightly with an increase in reverse voltage. Photocurrent varies with light intensity.
- Solar cell: Operates in the fourth quadrant where light generates a current even when voltage is negative, resembling the graph of a voltage source.
Given these descriptions, let's match with the graph characteristics:
- The forward-biased p-n junction will have a graph showing a steep rise after a certain positive voltage.
- The Zener diode’s characteristic curve will show a sharp rise in reverse bias at the breakdown voltage.
- The photodiode graph will show limited current increase in reverse bias and dependency on light intensity.
- The solar cell will exhibit characteristics akin to a current generator when exposed to light.
From the options: (D), (C), (A), (B), let's match them:
| D: Forward-biased p-n junction diode |
| C: Zener diode |
| A: Photodiode |
| B: Solar cell |
This matches our analysis, thus the correct answer is: (D), (C), (A), (B).
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