Calculate the current shown by the ammeter A | vedclass

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

Question

(B) The circuit consists of two $5 \, \Omega$ resistors in parallel with a bridge of four $10 \, \Omega$ resistors.First, consider the bridge part. Th

Vedclass · Accepted Answer

$0.2$

Vedclass · Answer

(B) The circuit consists of two $5 \, \Omega$ resistors in parallel with a bridge of four $10 \, \Omega$ resistors.First, consider the bridge part. The four $10 \, \Omega$ resistors are connected in a way that they form two parallel branches, each containing two $10 \, \Omega$ resistors in series. Resistance of each branch = $10 \, \Omega + 10 \, \Omega = 20 \, \Omega$.Since there are two such branches in parallel, the equivalent resistance of the bridge part $(R_b)$ is:$\frac{1}{R_b} = \frac{1}{20} + \frac{1}{20} = \frac{2}{20} = \frac{1}{10} \implies R_b = 10 \, \Omega$.Now, this $10 \, \Omega$ equivalent resistance is in parallel with the two $5 \, \Omega$ resistors.Total equivalent resistance $(R_{	ext{net}})$ is given by:$\frac{1}{R_{	ext{net}}} = \frac{1}{5} + \frac{1}{5} + \frac{1}{10} = \frac{2+2+1}{10} = \frac{5}{10} = \frac{1}{2} \implies R_{	ext{net}} = 2 \, \Omega$.Using Ohm's law, $V = i R_{	ext{net}}$:$0.4 = i 	imes 2$$i = \frac{0.4}{2} = 0.2 \, A$.

Calculate the current shown by the ammeter $A$ in the circuit diagram. (in $A$)

Similar Questions

$A$ parallel combination of two resistors,of $1 \,\Omega$ each,is connected in series with a $1.5 \,\Omega$ resistor. The total combination is connected across a $10 \,V$ battery. The current flowing in the circuit is .............. $A$

$A$ $5\ V$ battery with internal resistance $2\,\Omega$ and a $2\,V$ battery with internal resistance $1\,\Omega$ are connected to a $10\,\Omega$ resistor as shown in the figure. Find the current through the $10\,\Omega$ resistor.

An external resistance $R$ is connected to a battery of $e.m.f.$ $V$ and internal resistance $r$. The joule heat produced in resistor $R$ is maximum when $R$ is equal to

Two electric resistors have equal values of resistance $R$. Each can be operated with a power of $320 \ W$ at $220 \ V$. If the two resistors are connected in series to a $110 \ V$ electric supply,then the power generated in each resistor is (in $W$)

In the circuit shown in the figure, if the ammeter and voltmeter are ideal, then the power consumed in the $9 \, \Omega$ resistor will be .......... $W$.

Vedclass Test Series

Exam Paper Generator

Online Exam Module