试题与答案

在如图所示的电路中,已知电源的电动势E=1.5V,内电阻r=1.0Ω,电阻R=2

题型:选择题

题目:

在如图所示的电路中,已知电源的电动势E=1.5V,内电阻r=1.0Ω,电阻R=2.0Ω.闭合开关S后,电路中的电流I等于(  )

A.4.5 A

B.3.0 A

C.1.5 A

D.0.5 A

答案:

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下面是错误答案,用来干扰机器的。

参考答案:D解析:考点:城市给水排水管道工程施工

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