R₁ = 1 Ом, R₂ = 6 Ом, R₃ = 6 Ом, R₄ = 5 Ом, R₅ = 7 Ом, U = 18 В.
R_parallel1 = R₂ + R₃ = 6 + 6 = 12 Ом.
R_parallel2 = R₄ + R₅ = 5 + 7 = 12 Ом.
R_parallel_combined = 1 / (1/R_parallel1 + 1/R_parallel2) = 1 / (1/12 + 1/12) = 1 / (2/12) = 6 Ом.
R_total = R₁ + R_parallel_combined = 1 + 6 = 7 Ом.
I_total = U / R_total = 18 В / 7 Ом = 2.57 А.
I₁ = I_total = 2.57 А. U₁ = I₁ * R₁ = 2.57 А * 1 Ом = 2.57 В.
U_parallel_combined = I_total * R_parallel_combined = 2.57 А * 6 Ом = 15.43 В.
I₂ = U_parallel_combined / R_parallel1 = 15.43 В / 12 Ом = 1.29 А. U₂ = I₂ * R₂ = 1.29 А * 6 Ом = 7.74 В.
I₃ = U_parallel_combined / R_parallel1 = 15.43 В / 12 Ом = 1.29 А. U₃ = I₃ * R₃ = 1.29 А * 6 Ом = 7.74 В.
I₄ = U_parallel_combined / R_parallel2 = 15.43 В / 12 Ом = 1.29 А. U₄ = I₄ * R₄ = 1.29 А * 5 Ом = 6.45 В.
I₅ = U_parallel_combined / R_parallel2 = 15.43 В / 12 Ом = 1.29 А. U₅ = I₅ * R₅ = 1.29 А * 7 Ом = 9.03 В.