Question:medium
A 5.0 V stabilized power supply is required to be designed using a 12 V DC power supply as input source. The maximum power rating of zener diode is 2.0 W. The minimum value of resistance $R_s$ in $\Omega$ connected in series with zener diode will be
A 5.0 V stabilized power supply is required to be designed using a 12 V DC power supply as input source. The maximum power rating of zener diode is 2.0 W. The minimum value of resistance $R_s$ in $\Omega$ connected in series with zener diode will be
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Logic Tip: The phrase "minimum value of resistance" always corresponds to the "maximum current" scenario. If the resistance were any lower than $17.5\text{ }\Omega$, the current would exceed $0.4\text{ A}$, dissipating more than $2.0\text{ W}$ and destroying the Zener diode!
Updated On: Apr 28, 2026
- 16.5
- 17.5
- 18.5
- 15.5
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The Correct Option is B
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