What is the equivalent resistance between A a | vedclass

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

Question

(D) Let the nodes be $C$ and $D$ at the bottom junctions. The circuit consists of two resistors $R$ in series with the parallel combination of the rem

Vedclass · Accepted Answer

None of these

Vedclass · Answer

(D) Let the nodes be $C$ and $D$ at the bottom junctions. The circuit consists of two resistors $R$ in series with the parallel combination of the remaining three resistors.Specifically,the two resistors $R$ at the bottom are in series,giving $R + R = 2R$.This $2R$ is in parallel with the middle resistor $R$,giving an equivalent resistance $R_p = \frac{(2R \cdot R)}{(2R + R)} = \frac{2R^2}{3R} = \frac{2}{3}R$.Adding the two outer resistors $R$ in series,the total equivalent resistance is $R_{eq} = R + \frac{2}{3}R + R = \frac{8}{3}R$.Given $R = 3\,\Omega$,we have $R_{eq} = \frac{8}{3} 	imes 3 = 8\,\Omega$.Since $8\,\Omega$ is not among the options,the correct choice is $D$.

What is the equivalent resistance between $A$ and $B$ in the figure below if $R = 3\,\Omega$?

Similar Questions

$A$ voltmeter of resistance $1000\,\Omega$ is connected across a resistance of $500\,\Omega$ in the given circuit. What will be the reading of the voltmeter in $V$?

If $E_1 = 4 \ V$ and $E_2 = 12 \ V$,find the current in the circuit and the potential difference between the points $P$ and $Q$ respectively.

In the circuit shown below,the reading of the voltmeter $V$ is ........... (in $, V$)

The sliding contact $C$ is at one-fourth of the length of the potentiometer wire $(AB)$ from $A$ as shown in the circuit diagram. If the resistance of the wire $AB$ is $R_0$,then the potential drop $(V)$ across the resistor $R$ is

Which arrangement of four identical resistances should be used to draw maximum energy from a cell of voltage $V$?

Vedclass Test Series

Exam Paper Generator

Online Exam Module