1/5单选题
难度：
1.
如图所示滑动变阻器的四种接线情况中，当滑片向右移动时，变阻器连入电路的阻值变大的是（ ）
| A |
|
| B |
|
| C |
|
| D |
|
- 提示1：
- PHA+56Gu5a6a5o6l57q/5p+x55qE5L2N572u77yM5qC55o2u5YW25L2N572u5Yik5pat55S16Zi755qE5Y+Y5YyWPGJyPjwvcD4=
正确答案：Qw==
PGRpdj5BROmAiemhueWIkueJh+a7keWKqOS4jeW9seWTjeaOpeWFpeeUtei3r+eahOeUtemYu+Wkp+WwjzwvZGl2PjxkaXY+QuOAgeWIkueJh+WPs+enu++8jOaOpeWFpeeUtei3r+eahOmYu+WAvOWPmOWwjzwvZGl2Pg==
2/5单选题
难度：
2.
如图所示，当滑动变阻器的滑片P向左移动时，能使电路中的电阻变小的接法是（ ）
| A |
|
| B |
|
| C |
|
| D |
|
- 提示1：
- PHA+56Gu5a6a5o6l57q/5p+x55qE5L2N572u77yM5qC55o2u5YW25L2N572u5Yik5pat55S16Zi755qE5Y+Y5YyWPGJyPjwvcD4=
正确答案：RA==
PGRpdj5BQua7keeJh+W3pua7ke+8jOi/nuWFpeeUtei3r+eahOmYu+WAvOWPmOWkpzwvZGl2PjxkaXY+Q+a7keeJh+enu+WKqO+8jOS4jeW9seWTjei/nuWFpeeUtei3r+eahOmYu+WAvDwvZGl2Pg==
3/5单选题
难度：
3.
如图是滑动变阻器的结构示意图，选用其中的两个接线柱并将它们接入电路，滑动滑片P时，关于滑动变阻器连入电路的电阻，下列说法正确的是（ ）
| A | 将A、D连入电路，P向右滑动，电阻不变 |
| B | 将A、C连入电路，P向右滑动，电阻变小 |
| C | 将B、D连入电路，P向左滑动，电阻变小 |
| D | 将B、C连入电路，P向左滑动，电阻变大 |
- 提示1：
- PHA+56Gu5a6a5o6l57q/5p+x55qE5L2N572u77yM5qC55o2u5YW25L2N572u5Yik5pat55S16Zi755qE5Y+Y5YyWPGJyPjwvcD4=
正确答案：RA==
PGRpdj5B44CB5bCGQeOAgUTov57lhaXnlLXot6/vvIxQ5ZCR5Y+z5ruR5Yqo77yM55S16Zi75Y+Y5aSnPC9kaXY+PGRpdj5C44CB5bCGQeOAgUPov57lhaXnlLXot6/vvIxQ5ZCR5Y+z5ruR5Yqo77yM55S16Zi75Y+Y5aSnPC9kaXY+PGRpdj5DLiDlsIZC44CBROi/nuWFpeeUtei3r++8jFDlkJHlt6bmu5HliqjvvIznlLXpmLvlj5jlpKc8L2Rpdj4=
4/5单选题
难度：
4.在如图所示电路中，电源电压保持不变，闭合开关，当滑动变阻器的滑片P向左滑动时（ ）
| A | 电压表示数变大，电流表示数变小，灯泡变暗 |
| B | 电压表示数变小，电流表示数变大，灯泡变亮 |
| C | 电压表示数变大，电流表示数变大，灯泡变亮 |
| D | 电压表示数变小，电流表示数变小，灯泡变暗 |
- 提示1：
- IOa7keWKqOWPmOmYu+WZqOWIkueJh+WQkeW3pu+8jOaOpeWFpeeUtei3r+eahOmYu+WAvOWPmOWwj++8jOWNs+eUtei3r+eahOaAu+eUtemYu+WPmOWwj++8jOeUtea1geWPmOWkp++8jOeUtea1geihqOekuuaVsOWPmOWkp++8jOeCueeBr+WPmOS6ru+8jOeCueeBr+S4pOerr+eahOeUteWOi+WPmOWkp++8jOWImeeUteWOi+ihqOekuuaVsOWPmOWkpw==
正确答案：Qw==
PGRpdj7mu5Hliqjlj5jpmLvlmajliJLniYflkJHlt6bvvIzmjqXlhaXnlLXot6/nmoTpmLvlgLzlj5jlsI/vvIzljbPnlLXot6/nmoTmgLvnlLXpmLvlj5jlsI/vvIznlLXmtYHlj5jlpKfvvIznlLXmtYHooajnpLrmlbDlj5jlpKfvvIzngrnnga/lj5jkuq7vvIzngrnnga/kuKTnq6/nmoTnlLXljovlj5jlpKfvvIzliJnnlLXljovooajnpLrmlbDlj5jlpKfvvIzliJnpgInpoblD5q2j56GuPC9kaXY+
5/5单选题
难度：
5.
如图所示，电源电压保持不变，当变阻器滑片P滑到A端时，闭合开关S1
和S2，灯泡L恰好正常发光，以下说法正确的是（ ）
| A | 滑片P仍在A端，开关S1断开，S2闭合，灯泡L仍正常发光 |
| B | 滑片P仍在A端，开关S1闭合，S2断开，灯泡L仍正常发光 |
| C | 滑片P滑到B端，同时闭合开关S1和S2，灯泡L仍正常发光 |
| D | 滑片P滑到B端，开关S1闭合，S2断开，灯泡L仍正常发光 |
- 提示1：
- PHA+56Gu5a6a5ruR5Yqo5Y+Y6Zi75Zmo55qE5ruR54mH56e75Yqo6L+H56iL5Lit55S16Zi75aaC5L2V5Y+Y5YyW77yM5qC55o2u55S16Zi75Y+Y5YyW77yM5byA5YWz55qE5o6n5Yi277yM55S16Lev55qE55S16Lev5aaC5L2V6K6p5Y+Y5YyWPC9wPg==
正确答案：Qg==
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