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Question: Answered & Verified by Expert
A Zener diode, having breakdown voltage equal to 15 V is used in a voltage regulator circuit shown in the figure. The current through the diode is

PhysicsSemiconductorsNEET
Options:
  • A 10 mA
     
  • B 15 mA
  • C 20 mA
  • D 5 mA
Solution:
2956 Upvotes Verified Answer
The correct answer is: 5 mA


For R=1 kΩ

i1=151 mA=15 mA

For R=250 Ω

i250=20-15250=5250

=201000=20 mA

izener=20-15

=5 mA

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