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If a zener diode (VZ = 5 V and IZ = 10mA) is connected in series with a resistance

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If a zener diode (VZ = 5 V and IZ = 10mA) is connected in series with a resistance and 20 V is applied across the combination, then the maximum resistance one can use without spoiling zener action is 

(a) 20Ω 

(b) 15Ω

(c) 10Ω

(d) 1.5Ω

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1 Answer

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Best answer

Correct option (d)

Explanation:

 Voltage available across load resistance R 

= 20 – 5 = 15 V

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