Current through the Zener diode in a voltage regulator circuit

1. A.
   $25\text{ }mA$
2. B.
   $50\text{ }mA$
3. C.
   $100\text{ }mA$
4. D.
   zero

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1. A.
   $50\text{ }mA$
2. B.
   0
3. C.
   $30\text{ }mA$
4. D.
   $20\text{ }mA$

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1. A.
   $I_{L} = 20\text{ }mA;R_{L} = 250\Omega$
2. B.
   $I_{L} = 10\text{ }A;R_{L} = 0.5\Omega$
3. C.
   $I_{L} = 0.02\text{ }mA;R_{L} = 250\Omega$
4. D.
   $I_{L} = 10\text{ }mA;R_{L} = 500\Omega$

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