Question

Answer 1

a. \(R=R1+R2=5+15=20\Omega\)

\(I=I1=I2=U:R=3:20=0,15A\)

b. \(U_{AB}=U1+U2=\left(0,15.5\right)+\left(0,15.15\right)=3V\)

Answer 2

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)\(U_2=U_V=3V\)

   \(U_1=I_1\cdot R_1=0,2\cdot5=1V\)

   \(U_{AB}=U_1+U_2=1+3=4V\)

Answer 3

a. 

b. U_AB = U1 + U2 = (0,15.5) + (0,15.15) = 3 (V)