Question

Giải hộ em với

Answer 1

\(R_{23}=\dfrac{R_2.R_3}{R_2+R_3}=\dfrac{15.10}{15+10}=6\left(\Omega\right)\)

\(R_{tđ}=R_1+R_{23}=9+6=15\left(\Omega\right)\)

\(U_{23}=U_2=U_3=I_3.R_3=0,3.10=3\left(V\right)\)

\(I_2=\dfrac{U_2}{R_2}=\dfrac{3}{15}=0,2\left(A\right)\)

\(I=I_1=I_{23}=I_2+I_3=0,3+0,2=0,5\left(A\right)\)

\(U=I.R=0,5.15=7,5\left(V\right)\)