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14.Semiconductor Electronics
medium
A zener diode, having breakdown voltage equal to $15\, V$, is used in a voltage regulator circuit shown in figure. The current through the zener diode is.....$mA$
A
$5$
B
$10$
C
$15$
D
$20$
Solution
$i_{1}=15 / 1=15 mA$
For $11: 250 \Omega$
$i _{250}=20-15 / 250=5 / 250$
$=20 / 1000=20 mA$
therefore, $i _{\text {zener }}=20-15=5 mA$
Standard 12
Physics
