
初二物理线上评测-上册第9章-静电
Authored by KHOO XUEMEY
Physics
8th - 9th Grade
Used 47+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下哪一项关于静电的例子是错误的?
经丝绸摩擦的塑料尺吸起纸屑
经毛皮摩擦的橡胶棒吸起气球
塑料梳子与头发摩擦而带电荷,对头发产生引力
一块磁铁靠近铁屑,铁屑都被吸付在磁铁上
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下哪一项关于不同物质相互吸引的说明是错误的?
一物体带正电,另一物体带负电
一物体带正电,另一物体不带电
一物体带负电,另一物体带负电
一物体带负电,另一物体不带电
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
以下哪一项有关摩擦起电的说明是正确的?
摩擦起电并没有创造电,而是电子从一物转移至另一物
摩擦起电并创造电,将所创造的电子从一物转移至另一物
当摩擦时,原子核束缚电子的能力较强的一方,有些电子会转移到束缚能力较弱的另一方
当摩擦时,原子核束缚质子的能力较弱的一方,有些电子会挣脱原子核的束缚,转移到束缚能力较强的另一方
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
玻璃棒摩擦丝绸,束缚能力强,捕获电子的是
玻璃棒
丝绸
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
橡胶棒与毛皮摩擦,束缚能力弱,失去电子的是
橡胶棒
毛皮
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
物体经过摩擦后带负电的原因是
物体对电子的束缚力较弱
物体对电子的束缚力较强
物体对质子的束缚力较弱
物体对质子的束缚力较强
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
带电的金属棒原本吸引不带电的乒乓球,接触后一部分的电荷转移到锡箔上而使得小球及金属棒排斥。小球及金属棒排斥是因为
小球及金属棒带不同电荷
小球及金属棒带同种电荷
小球及金属棒都不带电
小球及金属棒一个带电,一个不带电
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