
kt vật lí 9 (thử nghiệm)
Quiz
•
Physics
•
1st - 5th Grade
•
Medium
Son Goku
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
nếu chiều dài tăng hoặc giảm bao nhiều lần thì?
điện trở giảm bấy nhiêu lần
điện trở tăng hoặc giảm bấy nhiêu lần
không tăng cũng không giảm
không có gì xảy ra
2.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
điện trở tỉ lệ gì với chiều dài?
thuận
nghịch
không tỉ lệ
tất cả đáp án đều sai
3.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
công thức tính điện năng
A=P.t
A=Q.P
A=I.U
A=P.U
4.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
cho R1 nối tiếp R2 có R1=5,R2=7.tính điện trở tương đương?
2
12
6
10
5.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
điện trở dây dẫn không phụ thuộc vào?
tiết diện
khối lượng
vật liệu
chiều dài
6.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
cho R1 nối tiếp R2.câu nào sau đây là đúng?
I1=I2=I
U1=U2=U
I1+I2=I
U1 không bằng U2 lẫn U
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
cho R1//R2,có R1=R2=30 ôm.tính điện trở tương đương?
30
10
15
50
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