毛皮摩擦塑料棒和丝绢摩擦玻璃棒的结果,下列哪一项是正确的?
J2_第9章(上)静电

Quiz
•
Science
•
7th Grade
•
Hard
W.Y. Tan
Used 25+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
摩擦生热而产生吸引力
毛皮、丝绢带负电
这四种物体皆可吸引不带电的小纸片
塑料棒和玻璃棒互相排斥
2.
FILL IN THE BLANK QUESTION
2 mins • 1 pt
不流动的电荷叫。。。。。
3.
FILL IN THE BLANK QUESTION
2 mins • 1 pt
用摩擦的方法使物体带电叫。。。。。。。(4字)
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
一物体带有正电,则物体内的质子数_____电子数
大于
小于
等于
5.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
毛皮摩擦塑料尺后,塑料尺带负电,下列叙述何者正确?(复选)
摩擦的功能是为了使质子转移
毛皮失去电子而塑料尺获得电子
摩擦过后的毛皮可吸引带负电的物体
毛皮或塑料棒互相摩擦后,皆可吸引小纸片
6.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
甲、乙两个细丝线悬挂着轻质小球,让乙球靠近甲球,在以下几种情况中,能使两球相互排斥的是。。。。。
甲带正电乙不带电
甲带正电乙带负电
甲带正电乙带正电
甲带负电乙带负电
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
用毛皮摩擦过的橡胶棒靠近悬吊着的通草球时,它们互相排斥,则通草球。。。。。
带正电
带负电
不带电
无法确定
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