In the figure shown below, D1 has reverse saturation current

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In the figure shown below, D₁ has reverse saturation current of 20 mA and reverse breakdown voltage of 100V, corresponding values for D₂ are 50 mA and 50V. The current in the circuit is the circuit is—

1. 20 mA, A to B
2. 20 mA, B to A
3. 50 mA, A to B
4. 50 mA, B to A

Correct Option: C

At 40V input no zener diode undergoes breakdown D ₁ is forward biased and D₂ reverse biased. So saturation current of D₂ flows into the circuit. Thus 50 mA from A to B.