試題詳解

(13)As shown in the right figure, take ε₀ = 18 V, R₁ = 5 Ω, R₂ = 10 Ω, and R₃ = 2.5 Ω. Write the current I₂ immediately after the switch is first closed.

(A)1.2 A
(B)1.5 A
(C)1.8 A
(D)2.1 A
(E)0.0 A