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Question

A Zener diode, having breakdown voltage equal to 15 V, is used in a voltage regulator circuit shown in figure. The current through the diode is
306837.png
  1. 5 mA
  2. 10 mA
  3. 15 mA
  4. 20 mA

A
10 mA
B
5 mA
C
15 mA
D
20 mA
Solution
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Voltage across zener diode is constant
(i)1kΩ=15V1kΩ=15mA

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