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A Zener diode of Zener break-down voltage 10 V is connected as shown in the figure. Current through Zener diode is

Options

  1. A4   mA
  2. B0 .6 mA
  3. C6   mA
  4. DZero

Correct answer

D. Zero

Step-by-step solution

If we consider break down in Zener diode, then potential across R 3 will be 10   V and R 1 will be 2   V . So current in R 3 will be i 3 = 10 1500 = 2 300   A and current in R 1 will be i 1 = 2 500   A ⇒ i 1 < i 3 , which is not possible ⇒ The potential difference across the Zener diode does not reach to break down voltage. So no current will flow through the reverse-biased Zener diode.

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