Consider the diagram shown below. A voltmeter | vedclass

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

Question

(C) When a voltmeter of resistance $150\,\Omega$ is connected in parallel across the $100\,\Omega$ resistor between $A$ and $B$,the equivalent resista

Vedclass · Accepted Answer

$31$

Vedclass · Answer

(C) When a voltmeter of resistance $150\,\Omega$ is connected in parallel across the $100\,\Omega$ resistor between $A$ and $B$,the equivalent resistance $R_{AB}$ is given by:$R_{AB} = \frac{150 	imes 100}{150 + 100} = \frac{15000}{250} = 60\,\Omega$The total resistance of the circuit $R_{eq}$ is the sum of $R_{AB}$ and the resistance between $B$ and $C$ $(R_{BC} = 100\,\Omega)$:$R_{eq} = R_{AB} + R_{BC} = 60 + 100 = 160\,\Omega$The total current $I$ flowing through the circuit is:$I = \frac{V}{R_{eq}} = \frac{50}{160} = 0.3125\,A$The potential drop across $B$ and $C$ is:$V_{BC} = I 	imes R_{BC} = 0.3125 	imes 100 = 31.25\,V$Rounding to the nearest integer,the potential drop is $31\,V$.

Consider the diagram shown below. $A$ voltmeter of resistance $150\,\Omega$ is connected across $A$ and $B$. The potential drop across $B$ and $C$ measured by the voltmeter is $...........\,V$.

Similar Questions

$A$ torch battery consists of two cells of $1.45\,V$ and an internal resistance of $0.15\,\Omega$ each. Both cells send current through the filament of a lamp having a resistance of $1.5\,\Omega$. The value of the current will be ....... $A$.

In the circuit shown below,the resistances are given in $\Omega$ and the battery is assumed ideal with an emf equal to $3\,V$. The voltage across the resistance $R_4$ is ................. $V$.

Three identical bulbs $B_1, B_2$ and $B_3$ are connected to the mains as shown in the figure. If $B_3$ is disconnected from the circuit by opening switch $S$,then the incandescence of bulb $B_1$ will

The equivalent resistance of the infinite network given below is:

The resistance between points $A$ and $B$ is

Vedclass Test Series

Exam Paper Generator

Online Exam Module