| Figure shown a DC voltage regulator circuit, with a Zener diode of breakdown voltage = 6V. If the unregulated input voltage varies between 10 V to 16 V, then what is the maximum Zener current? [JEE Main 12-4-2019 Afternoon] |
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A) 2.5 mA
B) 3.5 mA
C) 7.5 mA
D) 1.5 mA
Correct Answer: B
Solution :
| [b] Maximum current will flow from zener if input voltage is maximum. |
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| When zener diode works in breakdown state, voltage across the zener will remain same. |
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Current through |
| Since input voltage = 16V |
Potential difference across  |
Current through  |
| Current through zener diode |
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