If each diode has a forward bias resistance of 25 in the below circuit, [2023]

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Solution

Q.
If each diode has a forward bias resistance of $25 Ω$ in the below circuit,

Which of the following options is correct [2023]

1 $\frac{I_{3}}{I_{4}} = 1$

2 $\frac{I_{2}}{I_{3}} = 1$

3 $\frac{I_{1}}{I_{2}} = 1$

4 $\frac{I_{1}}{I_{2}} = 2$

Ans.
(4)

$R_{e q} = \frac{150 \times 150}{300} + 25 = 100 Ω$

$I_{1} = \frac{5}{10} = 0.05 A$

$I_{2} = I_{4} = \frac{0.05}{2} = 0.025 A$

$\frac{I_{1}}{I_{2}} = 2$

Solution

Q. If each diode has a forward bias resistance of 25 Ω in the below circuit, Which of the following options is correct [2023]

1 I3I4=1

2 I2I3=1

3 I1I2=1

4 I1I2=2

Ans. (4) Req=150×150300+25=100 Ω I1=510=0.05 A I2=I4=0.052=0.025 A I1I2=2

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Q.
If each diode has a forward bias resistance of $25 Ω$ in the below circuit,

Which of the following options is correct [2023]

1 $\frac{I_{3}}{I_{4}} = 1$

2 $\frac{I_{2}}{I_{3}} = 1$

3 $\frac{I_{1}}{I_{2}} = 1$

4 $\frac{I_{1}}{I_{2}} = 2$

Ans.
(4)

$R_{e q} = \frac{150 \times 150}{300} + 25 = 100 Ω$

$I_{1} = \frac{5}{10} = 0.05 A$

$I_{2} = I_{4} = \frac{0.05}{2} = 0.025 A$

$\frac{I_{1}}{I_{2}} = 2$