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Standard XII
Physics
Zener Diode as Voltage Stabilizer
Question

In the given circuit, the current through zener diode is:
868369_5382bc9c062d4daba6f533fb5cb78800.png
  1. 2.5 mA
  2. 3.3 mA
  3. 6.7 mA
  4. 5.5 mA

A
2.5 mA
B
5.5 mA
C
6.7 mA
D
3.3 mA
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Solution
Verified by Toppr

the current through 500 ohm resistor is 0.01 ampere as voltage across is 5V.
the current through 1500 ohm resistor is 0.0067 ampere so the current through zener diode is difference in current through these resistors . so the current is 0.01−0.0067=0.0033ampere .
On converting to mA we get
Current through zener diode = 3.3 mA
so the correct answer is B.

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