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Question

Figure shows a diode connected to an external resistance and a battery. Assuming the barrier potential developed in the diode to be 0.5 V, find the value of current in the circuit in mA.
1215618_62929038f8544596805dce58779a5f1f.png

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Solution

Apply Kirchhoff's voltage law in the circuit,

4.5=0.5+100I

100I=4

I=4100=0.4mA

1444781_1215618_ans_b76593fdd3274b63a8606bda94ea07de.png

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