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Physical electronics devices and ics miscellaneous

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Physical Electronics Devices and ICs

Physical electronics devices and ics miscellaneous
  1. A 4.7 zener has a resistance of 15Ω. When a current 20 mA passes through it, then the terminal voltage is—
    1. 5 V
    2. 10 V
    3. 15 V
    4. 20 V
Correct Option: A

The terminal voltage,
V’z = Vz + Iz rz
or V’z = 4.7 + 20 × 10–3 × 15
or V’z = 4.7 + 0.3 = 5 V


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