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沪科版《第15章 探究电路》单元测试卷(无答案)
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资料审核：shengshu1234
资料简介
一、选择题（每题2分，共20分）
1．关于导体的电阻，下列说法正确的是( )
A．导体的电阻与导体两端的电压成正比
B．导体的电阻与通过导体的电流成反比
C．导体两端电压为零时，导体的电阻也为零
D．导体的电阻与电流、电压大小无关
2.最先研究电流与电压、电阻并得出三者之间关系的科学家是( )
A.欧姆 B.伽利略 C .牛顿 D奥斯特
3. 如图所示电路中，电源电压保持不变，闭合开关S后，将滑动变阻器R的滑片P向左移动，在此过程中( )
A. 电压表V1示数变小，电压表V2示数变大
B. 电流表A示数变小，电压表V1示数不变
C. 电流表A 示数不变，灯泡L亮度变亮
D. 电压表V1示数不变，灯泡L亮度变暗
4（第10题）明将酒精气体传感器，
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资料格式：rar
资料版本：沪科版
适用地区：不限
文件大小：0.00B
资料作者：shengshu1234
审核人员：初中物理在线
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