如图所示电路中,已知R1=3Ω ,R2=R3 = 2Ω,Us = 10V,开关S

Loveyou2020-05-20  11

问题 如图所示电路中,已知R1=3Ω ,R2=R3 = 2Ω,Us = 10V,开关S闭合前电路处于稳态,t=0时开关闭合。t = 0+时,iL1(0+)为()。A. 2 A B. - 2 A C. 2. 5A D. - 2. 5

选项 A.

答案A

解析[img]/upload/tiku/139/342606_1.jpg[/img]由换路定律,则iL1(0+)=iL1(0-)=2A[img]/upload/tiku/139/342606_1_1.jpg[/img]答案:A
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