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For a voltage source, its terminal voltage is known but its _______must be determined by the external circuit connecting with it.
选项：

A: electromotive force
B: current
C: control coefficient
D: polarity

发布时间：2024-06-20 14:44:55

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For a voltage source, its terminal voltage is known but its _______must be determined by the external circuit connecting with it. 选项： A: electromotive force B: current C: control coefficient D: polarity

For a voltage source, its terminal voltage is known but its _______must be determined by the external circuit connecting with it.
选项：

A: electromotive force
B: current
C: control coefficient
D: polarity