挑战习题
1/5单选题
难度：

1.

如图所示，闭合开关，灯泡正常发光，将滑动变阻器的滑片向上滑动时，观察到的现象是（　　）


A

灯泡变暗，电压表示数变大

B

灯泡变亮，电压表示数不变

C

灯泡变暗，电压表示数不变

D

灯泡变亮，电压表示数变大
提示1：
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
提示2：
PHA+55S15rWB5aKe5aSn77yM54Gv5rOh5Y+Y5Lqu77yM55S15rWB5Y+Y5bCP77yM54Gv5rOh5Y+Y5pqX44CCPGJyPjwvcD4=
正确答案：Qw==
PHA+77yIMe+8ieeUseeUtei3r+WbvuWPr+efpe+8jOeUteWOi+ihqOa1i+eUtea6kOeUteWOi++8jOeUtea6kOeUteWOi+S4jeWPmO+8jOWboOatpOa7keeJh+enu+WKqOaXtu+8jOeUteWOi+ihqOekuuaVsOS4jeWPmO+8mzwvcD48cD7vvIgy77yJ55Sx55S16Lev5Zu+5Y+v55+l77yM5ruR54mH5ZCR5LiK5ruR5Yiw5pe277yM5ruR5Yqo5Y+Y6Zi75Zmo5o6l5YWl55S16Lev6Zi75YC85Y+Y5aSn77yM5YiZ55S16Lev5Lit55qE55S15rWB5Y+Y5bCP77yM54Gv5rOh5Y+Y5pqX77ybPC9wPjxwPuaVhemAiUPvvI48L3A+

提示0/2

A

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