28 承上題,在 t>T 時,此電壓源傳送的瞬時功率 P2(t)又是多少?
(A)〔V22(t-T)〕∕ L
(B)(V2T) ∕ L
(C){〔V2(t-T)〕∕ L}+〔(V1T) ∕ L〕
(D){〔V22(t-T)〕∕ L}+〔(V1V2T) ∕ L〕
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統計: A(67), B(57), C(97), D(116), E(0) #2852162
統計: A(67), B(57), C(97), D(116), E(0) #2852162