Question
Hard
Solving time: 10 mins
Find the equivalent resistance of the network shown in figure between the points A and B.(Assume that the resistance of each diode is zero in forward bias and is infinity in reverse bias.)
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Text solutionVerified
Let the potentials at and be and , respectively.
(i) When , that is, a battery is connected between points and , with its positive terminal connected to point and its negative terminal connected to point B:
As the potential on the p-side of the diode is greater than the potential on the n-side of the diode, the diode is forward biased; thus, it can be replaced by a short circuit.
As the two resistances are connected in parallel, the effective resistance becomes
Equivalent resistance
(ii) When :
The diode is reverse biased, so it is replaced by an open circuit. Thus, no current flows through this branch.
Equivalent resistance
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Question Text | Find the equivalent resistance of the network shown in figure between the points A and B.(Assume that the resistance of each diode is zero in forward bias and is infinity in reverse bias.) |
Topic | Semiconductor Electronics: Materials, Devices and Simple Circuits |
Subject | Physics |
Class | Class 12 |
Answer Type | Text solution:1 |
Upvotes | 89 |