Question

In the circuit shown below, the diodes used are ideal. The values of V and I indicated in the figure are

• A. 4 V and 0.5 mA
• B. 3 V and 0.5 mA
• C. 4 V and 0.7 mA
• D. 3 V and 0.2 mA

Answer 1

The correct option is B 3 V and 0.5 mA

As voltage is same at both ends of diodes $D_2$, so no current will flow through $D_2$

$\therefore I_{D_2}=0$

When $D_1$ conducts, circuit behaves as,




$\therefore V=3V$

and $I=\frac{5-3}{4k}=0.5mA$