Question
- Name the type of a diode whose characteristics are shown in Fig. (A) and Fig. (B).
- What does the point P in Fig. (A) represent?
- What does the points P and Q in Fig. (B) represent?
✓
Answer
- Fig. (a) represents the characteristics of Zener diode and curve (b) is of solar cell.
- In fig. (a), point P represents Zener breakdown voltage.
- In fig. (b), the point Q represents zero voltage and negative current. Which means the light falling on solar cell with atleast minimum threshold frequency gives the current in opposite direction to that due to a battery connected to solar cell. But for the point Q the battery is short circuited. Hence it represents the short circuit current.
It means, there is a battery connected to a solar cell which gives rise to the equal and opposite current to that in solar cell by virtue of light falling on it.
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