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1 . 图甲为半波整流电路,在理想变压器的输出电路中有一只整流二极管,其具有单向导电性。原、副线圈的匝数比为
,电阻
,原线圈的输入电压随时间的变化关系如图乙所示,电表均为理想交流电表,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3407dcd0e695d2f6e1cfac0a99c4f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e5a6ea26f0aa0491df7d4ce234d11d5.png)
A.电压表V1、V2读数相同 |
B.电压表V2的读数为20V |
C.电流表A读数为2A |
D.原线圈的输入功率为20W |
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2024-04-24更新
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489次组卷
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2卷引用:2024届吉林省通榆县实验中学校高三下学期二模物理试题
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2 . 在如图甲所示的电路中,理想变压器原线圈输入电压的变化规律如图乙所示(正弦曲线),定值电阻
、
、
的阻值分别为
、
、
,各电表均为理想电表。电压表的示数为
,则下列说法正确的是( )
![](https://img.xkw.com/dksih/QBM/2021/7/13/2763179649998848/2763507116425216/STEM/b403ccfa-0608-4ada-bfb9-747448e71252.png?resizew=228)
![](https://img.xkw.com/dksih/QBM/2021/7/13/2763179649998848/2763507116425216/STEM/aa9c2f18-004d-420e-86b1-c5c352bc8ce8.png?resizew=303)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efc18a5bb2e53586331b2a58538a48b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f20f21a9d50b61dac519a3ddab539d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a2c4640b2bee411935f588fc5433c74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78aa8e890d2ac882e0fe79598811777a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4de49b9b4621a90d07ea99ae6c1cc75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/849ecaa9c400085a3339118893fb26bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a85c0092a7b13a43997f08295adb08ad.png)
![](https://img.xkw.com/dksih/QBM/2021/7/13/2763179649998848/2763507116425216/STEM/b403ccfa-0608-4ada-bfb9-747448e71252.png?resizew=228)
![](https://img.xkw.com/dksih/QBM/2021/7/13/2763179649998848/2763507116425216/STEM/aa9c2f18-004d-420e-86b1-c5c352bc8ce8.png?resizew=303)
A.变压器原副线圈的匝数比为![]() | B.电流表A1的示数为![]() |
C.电流表A2的示数为![]() | D.电流表A2的示数为![]() |
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2021-07-13更新
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3卷引用:2021届吉林省白城市第一中学高三下学期质量检测理综物理试题