Q.

In the circuit shown, zener diode is being used as voltage regulator. The current through the diode is

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a

25.5 mA

b

27.5 mA

c

2.5 mA

d

30 mA

answer is B.

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Detailed Solution

IL=VLRL=5020×103=2.5mA∣ IIN=E−Vz5×103=200−505=30mAIZ=INN−IL⇒IZ=30−2.5=27.5mA
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In the circuit shown, zener diode is being used as voltage regulator. The current through the diode is