a. \(R=R1+R2=5+15=20\Omega\)
\(I=I1=I2=U:R=3:20=0,15A\)
b. \(U_{AB}=U1+U2=\left(0,15.5\right)+\left(0,15.15\right)=3V\)
a)\(R_{tđ}=R_1+R_2=5+15=20\Omega\)
\(I_A=I_m=I_1=I_2=\dfrac{U_2}{R_2}=\dfrac{U_V}{R_2}=\dfrac{3}{15}=0,2A\)
(Vì vôn kế mắc song song với \(R_2\Rightarrow U_2=U_V\))
b)\(U_2=U_V=3V\)
\(U_1=I_1\cdot R_1=0,2\cdot5=1V\)
\(U_{AB}=U_1+U_2=1+3=4V\)
a. Rtd = R1 + R2 = 5 + 15 = 20 (Ω)
I = I1 = I2 = \(\dfrac{U}{R}\)= \(\dfrac{3}{20}\)= 0,15 (A)
b. UAB = U1 + U2 = (0,15.5) + (0,15.15) = 3 (V)
