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A Zener diode is connected to a battery and a load as show below: The currents, I , I _ Z and I _ L are respectively.

Options

  1. A15 ~mA , 5 ~mA , 10 ~mA
  2. B15 ~mA , 7.5 ~mA , 7.5 ~mA
  3. C12.5 ~mA , 5 ~mA , 7.5 ~mA
  4. D12.5 ~mA , 7.5 ~mA , 5 ~mA

Correct answer

D. 12.5 ~mA , 7.5 ~mA , 5 ~mA

Step-by-step solution

Here, R=4 k =4 10^3 V_i=60 ~V Zener voltage V_z=10 ~V R_L=2 k =2 10^3 Load current, I_ L = V_Z R_L = 10 2 10^3 =5 ~mA Current through R, I= V_i-V_Z R = 60-10 4 10^3 = 50 4 10^3 =12.5 ~mA Fom circuit diagram, aligned & I=I_Z+I_L & 12.5=I_Z+5 & I₇=12.5-5=7.5 ~mA aligned

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