In a regulated power supply, two similar 15 V zeners are connected in series. The input voltage is 45 V d.c. If each Zener has a maximum current rating of 300 mA, what should be the value of the series resistance ?

A.\t10 O

B.\t50 OCorrect Answer

C.\t25 O

D.\t40 O

Correct Option: B.\t50 O

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