In the given circuit,calculate the value of c | vedclass

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

Question

(D) First,calculate the net electromotive force $(E_{net})$ and net internal resistance $(r_{net})$ of the battery combination. The batteries are conn

Vedclass · Accepted Answer

$0.5$

Vedclass · Answer

(D) First,calculate the net electromotive force $(E_{net})$ and net internal resistance $(r_{net})$ of the battery combination. The batteries are connected in series with opposing polarities. Thus,$E_{net} = 8\,V - 4\,V = 4\,V$. The internal resistances are in series,so $r_{net} = 0.5\,\Omega + 1.0\,\Omega = 1.5\,\Omega$.Next,calculate the equivalent resistance of the external circuit. The $3\,\Omega$ and $6\,\Omega$ resistors are in parallel,so their equivalent resistance $R_p = \frac{3 	imes 6}{3 + 6} = \frac{18}{9} = 2\,\Omega$. This is in series with the $4.5\,\Omega$ resistor,so the total external resistance $R_{ext} = 4.5\,\Omega + 2\,\Omega = 6.5\,\Omega$.The total resistance of the circuit is $R_{total} = R_{ext} + r_{net} = 6.5\,\Omega + 1.5\,\Omega = 8.0\,\Omega$.Finally,the total current in the circuit is $I = \frac{E_{net}}{R_{total}} = \frac{4\,V}{8.0\,\Omega} = 0.5\,A$. Since the $4.5\,\Omega$ resistor is in the main branch,the current flowing through it is $0.5\,A$.

In the given circuit,calculate the value of current in the $4.5\,\Omega$ resistor in $A$.

Similar Questions

In the given figure, an ammeter reads $5 \, A$ and a voltmeter reads $40 \, V$. The actual value of resistance $R$ is

In the following circuit,the $5 \, \Omega$ resistor develops $45 \, J/s$ due to the current flowing through it. The power developed per second across the $12 \, \Omega$ resistor is ............. $W$.

An electric bulb rated for $500\, W$ at $100\, V$ is used in a circuit having a $200\, V$ supply. The resistance $R$ that must be put in series with the bulb,so that the bulb draws $500\, W$,is ................. $\Omega$.

In the given circuit,an ideal voltmeter connected across the $10\,\Omega$ resistance reads $2\,V$. The internal resistance $r$ of each cell is ................... $\Omega$.

$A$ current of $6\, A$ enters at corner $P$ of an equilateral triangle $PQR$ having $3$ wires of resistance $2 \,\Omega$ each and leaves by the corner $R$. The current $i_{1}$ in ampere is ........ .

Vedclass Test Series

Exam Paper Generator

Online Exam Module