In the following circuit,PN-junction diodes D | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) The circuit consists of three parallel branches,each containing a diode in series with a resistor $R$. The entire combination is in series with tw

Vedclass · Accepted Answer

$(ii) = (iii) < (i)$

Vedclass · Answer

(C) The circuit consists of three parallel branches,each containing a diode in series with a resistor $R$. The entire combination is in series with two resistors of $R/4$ at terminals $A$ and $B$.$(i)$ $V_A = -10 V, V_B = -5 V$: Here,$V_A $(ii)$ $V_A = -5 V, V_B = -10 V$: Here,$V_A > V_B$. The potential at the anodes of $D_1$ and $D_3$ is higher than their cathodes,making them forward-biased. $D_2$ is reverse-biased. The equivalent resistance is $R_{eq} = R/4 + (R || R) + R/4 = R/4 + R/2 + R/4 = R$.$(iii)$ $V_A = -4 V, V_B = -12 V$: Here,$V_A > V_B$. Similar to case $(ii)$,$D_1$ and $D_3$ are forward-biased,and $D_2$ is reverse-biased. The equivalent resistance is $R_{eq} = R/4 + (R || R) + R/4 = R$.Comparing the values: $1.5 R > R$. Thus,$(ii) = (iii) < (i)$.

In the following circuit,$PN$-junction diodes $D_1$,$D_2$,and $D_3$ are ideal. For the following potentials of $A$ and $B$,the correct increasing order of equivalent resistance between $A$ and $B$ will be:
$(i) V_A = -10 V, V_B = -5 V$
$(ii) V_A = -5 V, V_B = -10 V$
$(iii) V_A = -4 V, V_B = -12 V$

Similar Questions

The diode used in the circuit has a barrier voltage of $0.5\,V$ and a maximum power rating of $10\,mW$. What should be the minimum value of resistance $R$ connected in series with the diode?

The depletion layer consists of

In a forward biased $p-n$ junction diode,the potential barrier in the depletion region will be of the form:

In the following circuit,find $I_1$ and $I_2$.

The circuit shown in the figure contains two diodes,each with a forward resistance of $30 \, \Omega$ and infinite backward resistance. If the battery is $3 \, V$,the current through the $50 \, \Omega$ resistance (in ampere) is

Vedclass Test Series

Exam Paper Generator

Online Exam Module

In the following circuit,$PN$-junction diodes $D_1$,$D_2$,and $D_3$ are ideal. For the following potentials of $A$ and $B$,the correct increasing order of equivalent resistance between $A$ and $B$ will be:$(i) V_A = -10 V, V_B = -5 V$$(ii) V_A = -5 V, V_B = -10 V$$(iii) V_A = -4 V, V_B = -12 V$