Semiconductors

JEE Main level, single correct, medium

33 of 209

Question 33 of 209

Assuming in forward bias condition there is a voltage drop of 0.7 V across a silicon diode, the current through diode D1D_{1} in the circuit is ____\_\_\_\_ mA.
(Assume all diodes in the given circuit are identical)

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Answer: (B) 18.8

12−0.3×103I−0.7=012 - 0.3 \times 10^3 I - 0.7 = 0
11.30.3×103=I\dfrac{11.3}{0.3 \times 10^3} = I
37.66×10−3 A=I37.66 \times 10^{-3} \text{ A} = I
Current through diode D1D_1, I1=I/2I_1 = I/2
I1=18.83 mAI_1 = 18.83 \text{ mA}

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