欧姆定律
Authored by 邱弘兆老师 邱弘兆老师
Physics
1st Grade
Used 5+ times
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
课本中欧姆定律的公式是？
I=V/R
I=R/V
V=IR
R=V/I
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
V=4V, R=2Ω, I=?
3A
2A
0.5A
8A
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
电流为10安培，电压为5V，灯泡的电阻值是多少？
50Ω
2Ω
0.5Ω
5Ω
4.
FILL IN THE BLANK QUESTION
1 min • 1 pt
小灯泡上标有“2.8V 0.7A”字样。灯泡正常工作时灯丝的电阻值为 (a) Ω。
5.
FILL IN THE BLANK QUESTION
1 min • 1 pt
一种指示灯的电阻为6Ω，通过的电流为0.9A才能正常发光，要使这种指示灯正常发光，应加多大的电压？
(a)
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