50. If V1 = 10 V and V2 = 5 V, then output voltage V0 is:

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Direction: Consider the circuit Assume diodes are ideal.

50. If V₁ = 10 V and V₂ = 5 V, then output voltage V₀ is:

1. 9 V
2. 9.474 V
3. 0 V
4. 8.943 V

Correct Option: A

In such type of circuit arrangement at first sight it might not be obvious whether none, one or both diodes are conduct. In such type of circuit arrangement we should apply a plausible assumption, proceed with the analysis, and then check whether we end up with a consistent solution.
Assume D₁ is ON and D₂ is OFF

V₀ = V_i ×	9	= 10.	9	= 9 V
	1 + 9		10

Check Assumption

I_D1 =	V₁ – V₀	=	10 – 9	= 1 mA > 0 therefore D₁ is ON
	1 kΩ		1

i.e. assumption is correct.
At the same time
V_D₂ = V₂ – V₀ = 5 – 9 = – 4 < 0 therefore, D₂ OFF
Hence alternative (A) is the correct choice.