根据电流(I)和电阻(R)计算电压(V):
V(V) = I(A) × R(Ω)
根据电压(V)和电流(I)计算复数功率(S):
P(W) = V(V) × I(A) = V 2(V) / R(Ω) = I 2(A) × R(Ω)
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