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Q. As shown in the figure, a network of resistors is connected to a battery of $24 V$ with an internal resistance of $3 \Omega$. The currents through the resistors $R_4$ and $R_5$ are $I_4$ and $I_5$ respectively. The values of $I _4$ and $I _5$ are: $(24 V , 3 \Omega)$Physics Question Image

JEE MainJEE Main 2023Current Electricity

Solution:

Equivalent resistance of circuit
$R _{ eq } =3+1+2+4+2$
$ =12 \Omega$
Current through battery $i =\frac{24}{12}=2 A$
$ I _4=\frac{ R _5}{ R _4+ R _5} \times 2=\frac{5}{20+5} \times 2=\frac{2}{5} A $
$ I _5=2-\frac{2}{5}=\frac{8}{5} A$