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Question: Answered & Verified by Expert
Assume that each diode as shown in the tịgure has a forvard bias resistance of $50 \Omega$ and an infinite reverse bias resistance. The current through the resistance $150 \Omega$ is
PhysicsSemiconductorsWBJEEWBJEE 2015
Options:
  • A $0.66 \mathrm{A}$
  • B $0.05 \mathrm{A}$
  • C zero
  • D $0.04 \mathrm{A}$
Solution:
2613 Upvotes Verified Answer
The correct answer is: $0.04 \mathrm{A}$
The circuit is


As the lower diode attached to $100 \Omega$ resistance is in reversed biased so, $1 t$ is non-conducting
Now, the circuit can be redrawn as,

$\therefore$ Current through the circuit, $I=\frac{V}{R}$
$$
=\frac{10}{250}=0.04 \mathrm{A}
$$

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