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起止时间:2021-09-05到2022-01-30
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作业Chap5 Electrostatics 5.5 Electric Current
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评分规则: 1
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评分规则: 1
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评分规则: 1
Chap5 Electrostatics test5.2 Electrostatics
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7、 
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8、 
A:The potential difference increases.
B:The potential difference remains the same
C: The potential difference decreases.
D:not enough information given to decide
答案: The potential difference decreases.
9、 
A:The stored energy increases.
B:The stored energy remains the same.
C:The stored energy decreases.
D:not enough information given to decide
答案: The stored energy decreases.
10、 
A: The amount of charge increases.
B: The amount of charge remains the same.
C: The amount of charge decreases.
D:not enough information given to decide
答案: The amount of charge increases.
11、 
A:The stored energy increases.
B: The stored energy remains the same.
C:The stored energy decreases.
D:not enough information given to decide
答案: The stored energy increases.
12、 
A:their drift speed increases
B:their drift speed decreases.
C: their drift speed stays the same.
D:not enough information given to decide
答案: their drift speed increases
13、 
A:faster.
B:slower.
C:the same.
D:not enough information given to decide
答案: the same.
14、 
A:greater.
B:less.
C:the same.
D: not enough information given to decide
答案: less.
15、 
A: faster.
B: slower.
C: the same.
D: not enough information given to decide
答案: the same.
16、 
A:greater.
B:less.
C:the same.
D: not enough information given to decide
答案: greater.
17、 
A: bulb B glows more brightly.
B: bulb B glows less brightly.
C:bulb B glows just as brightly.
D:The answer depends on whether the mobile charges in the wires are positively or negatively charged
答案: bulb B glows just as brightly.
18、 
A: brighter.
B:less bright.
C:just as bright.
D:Any of the above, depending on the rated wattage of the bulb.
答案: brighter.
19、 
A: has zero resistance and should be connected in parallel with the circuit element being measured.
B: has zero resistance and should be connected in series with the circuit element being measured.
C:has infinite resistance and should be connected in parallel with the circuit element being measured
D:has infinite resistance and should be connected in series with the circuit element being measured.
答案: has infinite resistance and should be connected in parallel with the circuit element being measured
20、 An ideal ammeter
A:has zero resistance and should be connected in parallel with the circuit element being measured.
B:has zero resistance and should be connected in series with the circuit element being measured.
C:has infinite resistance and should be connected in parallel with the circuit element being measured.
D:has infinite resistance and should be connected in series with the circuit element being measured.
答案: has zero resistance and should be connected in series with the circuit element being measured.
21、 
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