Question

Find output voltage in the given circuit.

• A. +5 Volt
• B. 0
• C. 10 Volt
• D. -5 Volt

Hint:

For diode circuits, if the diode is reverse biased and non-conducting, it does not affect the current flow. If there is no current, the output voltage across the resistor will be zero.

Answer 1

The Correct Option is B

Step 1: Analyze the circuit.
The circuit consists of two diodes (\( D_1 \) and \( D_2 \)) with a resistor connected in series with \( D_1 \) and \( D_2 \) arranged in a way where the output voltage is taken across the resistor. The input voltage is \( +5V \).
Step 2: Understand the behavior of the diodes.
\( D_1 \) is forward biased because its anode is at \( +5V \), and the cathode is at a higher potential relative to the ground.
It conducts. \( D_2 \), however, is reverse biased because its anode is at 0V (ground), and its cathode is connected to the \( +5V \) potential.
In reverse bias, \( D_2 \) will not conduct.
Step 3: Analyze the voltage across the resistor.
Since \( D_2 \) is reverse biased and non-conducting, there will be no current flowing through the resistor.
With no current, there is no voltage drop across the resistor.
Step 4: Conclusion.
Since there is no current flowing through the resistor, the output voltage \( V_0 \) will be \( 0V \), because there is no voltage drop across the resistor.