When voltage and current developed in an AC circuit reach their peak values at the same time, the power factor is （）<br>A:lagging<br>B:leading<br>C:maximum<br>D:minimum

When voltage and current developed in an AC circuit reach their peak values at the same time, the power factor is （）
A:lagging
B:leading
C:maximum
D:minimum

出自：海船船员证

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