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CGP EDU Academic Team
Published on: September 12, 2026
A Zener diode of power rating 2W is to be used as a voltage regulator. If the Zener diode has a breakdown of 10V and it has to regulate voltage fluctuated between 6V and 14V, the value of R s for safe operation should be 
Text Solution
Verified by ExpertsThe correct answer is:
20
(20)
When unregulated voltage is 14V voltage across Zener diode must be 10V So potential difference across resistor ΔV Rs = 4 V and P zener = 2 W
VI = 2
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