20. 有一RL串聯電路,輸入電源 v(t) 為 200sin(3t) V,電阻值為 8 Ω,電感值為 2 H,試求穩態電 流 i(t) 為多少安培( A )?
(A) 20sin(3t-36.9°) A
(B) 20sin(3t-53.1°) A
(C) 20cos(3t-36.9°) A
(D) 20cos(3t-53.1°) A
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統計: A(161), B(9), C(19), D(6), E(0) #3010852
統計: A(161), B(9), C(19), D(6), E(0) #3010852