Assume that each diode as shown in the figure has a forward bias resistance of 50Ω and an infinite reverse bias resistance. The current through the resistance 150Ω is:
0.66A
0.05A
zero
0.04A
A
0.66A
B
0.05A
C
zero
D
0.04A
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Solution
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The circuit is as shown as image 1. As the lower diode attached to 100Ω resistance is in reversed biased so, it is non-conducting. Now, the circuit can be redrawn as image 2. ∴ Current through the circuit, I=VR=10250=0.04A
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