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NEET2011PhysicsSemiconductorsActual

A zener diode, having breakdown voltage equal to 15 ~V , is used in a voltage regulator circuit shown in figure. The current through the diode is

Options

  1. A10 ~mA
  2. B15 ~mA
  3. C20 ~mA
  4. D5 ~mA

Correct answer

D. 5 ~mA

Step-by-step solution

For I 1 k i₁= 15 1 =15 ~mA For II 250 aligned & i_ 250 = 20-15 250 = 5 250 &= 20 1000 =20 ~mA & i_ zener =20-15=5 ~mA aligned

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