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Question 20257
JEE Physics · Hard

Semiconductors: Zener Regulator — Design MCQ

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Zener Regulator — DesignHardQuestion 20257

Question

A Zener regulator has V_in = 12 V, V_Z = 6 V, R_s = 300 Ω, R_L = 600 Ω. Current through Zener I_Z is:
  1. A
    10 mA
    Correct
  2. B
    20 mA
  3. C
    5 mA
  4. D
    15 mA

Correct answer

10 mA

Explanation

I_total = (V_in − V_Z)/R_s = (12−6)/300 = 6/300 = 20 mA. I_L = V_Z/R_L = 6/600 = 10 mA. I_Z = I_total − I_L = 20 − 10 = 10 mA.

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