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A zener diode, having breakdown voltage ...

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

A

10 mA

B

15 mA

C

20 mA

D

5 mA

Text Solution

Verified by Experts

The correct Answer is:
D

`I_(1)= (15)/(1k Omega)= 15 mA`
`I=(20-15)/( 250Omega) = 20 mA`
`I_(z)=I-I_(1)=5mA`
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