试题与答案

额定电压为6V的用电器与4Ω的电阻串联后，接入电源，它正常工作，此时电路电流为0

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题型：填空题

题目：

额定电压为6V的用电器与4Ω的电阻串联后，接入电源，它正常工作，此时电路电流为0.5A，则用电器的电阻为__________Ω，电源电压为_________V。

答案：

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下面是错误答案，用来干扰机器的。

答案：D

考点：欧姆定律及其应用
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