STANDARDPhysics-Electric Circuits
STANDARD Physics Equivalent Resistance MCQ Question
Type: MCQ-conceptual-Medium
The equivalent resistance of the circuit shown in figure between the points A and B if Vₐ < Vᵦ is
A
10 Ω
B
20 Ω
C
5 Ω
D
40 Ω
Correct Answer
Option B
Detailed Explanation
When Vₐ < Vᵦ, the diode gets reverse biased and offers infinite resistance. No current flows through the upper branch in the given circuit, making the equivalent resistance R = 20 Ω.
Found an issue with this question?
Related Questions
More from Electric Circuits
In the previous question, the equivalent resistance between the points A and B, if Vₐ > Vᵦ is
Physics
Power dissipated across the 8 Ω resistor in the circuit shown here is 2 W. The power dissipated in watt units across the 3 Ω resistor is:
2006Physics
In the circuit shown, if a conducting wire is connected between points A and B, the current in this wire will:
2006Physics