(Solved): For the circuit shown in the figure, calculate total resistance R_9, voltage drop U3 across resis ...

For the circuit shown in the figure, calculate total resistance $R_1\_9$, voltage drop $U_3$ across resistor $R_3$, current $I_3$ through resistor $R_3$, power $P_2$ dissipated by resistor $R_2$, current $I_4$ through resistor $R_4$, power $P_7$ dissipated by resistor $R_7$, current $I_1$ through resistor $R_1$, voltage across the source $U$ and current through the source $I$ ! The following values are given: $\begin{array}{l}{R}_1=53\Omega ,R_2=41\Omega ,R_3=77\Omega ,R_4=23\Omega ,R_5=13\Omega ,\\ R_6=54\Omega ,R_7=100\Omega ,R_8=75\Omega ,R_9=100\Omega ,\text{ power of the source }P=16\mathrm{W}\end{array}$ Circuit diagram: For the circuit shown in the figure, calculate total resistance $R_1,9$, voltage drop $U_3$ across resistor $R_3$, current $I_3$ through resistor $R_3$, power $P_2$ dissipated by resistor $R_2$, current $I_4$ through resistor $R_4$, power $P_7$ dissipated by resistor $R_7$, current $I_1$ through resistor $R_1$, voltage across the source $U$ and current through the source $I$ ! The following values are given: $\begin{array}{l}{R}_1=53\Omega ,R_2=41\Omega ,R_3=77\Omega ,R_4=23\Omega ,R_5=13\Omega ,\\ R_6=54\Omega ,R_7=100\Omega ,R_8=75\Omega ,R_9=100\Omega ,\text{ power of the source }P=16\mathrm{W}\end{array}$ Circuit diagram: