Coulomb's Law Quizz
Quiz
•
Physics
•
11th Grade
•
Easy
Thúy Trần Thanh
Used 1+ times
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15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
potential diffirent nghĩa là gì
điện tích điểm
điện tích đứng yên
điện trường
hiệu điện thế
Answer explanation
electric field: điện trường
stationary charge: điện tích đứng yên
point charge: điện tích điểm
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
permittivity of free space nghĩa là gì
hằng số điện môi
lỗ trống
trường hấp dẫn
trường điện từ
Answer explanation
holes: lỗ trống
gravitational fields: trường hấp dẫn
electric field: điện trường
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
proportional nghĩa là gì
sấp xỉ
bằng
tỉ lệ nghịch
tỉ lệ thuận
Answer explanation
proportional: tỉ lệ thuận
inverserly proportional: tỉ lệ nghịch
Mọi người chú ý câu hỏi này để trả lời câu sau :)
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the statement of Coulomb’s law
Any two point charges exert an electrical force on each other that is proportional to the product of their charges and proportional to the square of the distance between them.
Any two point charges exert an electrical force on each other that is proportional to the product of their charges and inversely proportional to the square of the distance between them.
Any two point charges exert an electrical force on each other that is inversely proportional to the product of their charges and inversely proportional to the square of the distance between them.
Any two point charges exert an electrical force on each other that is proportional to the product of their charges and proportional to the square of the distance between them.
Answer explanation
Any two point charges exert an electrical force on each other that is proportional to the product of their charges and inversely proportional to the square of the distance between them.
Dịch: Hai điện tích điểm bất kỳ tác dụng lên nhau một lực điện tỷ lệ thuận với tích hai điện tích của chúng và tỷ lệ nghịch với bình phương khoảng cách giữa chúng.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A definition of electric potential
The electric potential at a point is equal to the work done in bringing unit negative charge from infinity to that point
The electric potential at a point is equal to the work done in bringing unit positive charge from infinity to infinity.
The electric potential at a point is equal to the work done in bringing unit positive charge from zero to that point
The electric potential at a point is equal to the work done in bringing unit positive charge from infinity to that point
Answer explanation
The electric potential at a point is equal to the work done in bringing unit positive charge from infinity to that point
Dịch: Điện thế tại một điểm bằng công thực hiện để đưa điện tích dương của đơn vị từ vô cực đến điểm đó
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When two identical spheres carry charges of the same magnitude, when brought close to each other, they repel each other. Let them come into contact with each other, then separate them a small distance.
attract each other
repel each other
can attract or repel each other
do not interact with each other
Answer explanation
When the two spheres come into contact with each other, their charges will be balanced. So when they separate, the two charges will repel each other.
Dịch: Khi hai quả cầu tiếp xúc với nhau thì điện tích của chúng cân bằng. Vậy khi tách ra, hai điện tích sẽ đẩy nhau.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If the distance between two point charges and the magnitude of each charge are simultaneously increased by 2 times, the electrostatic interaction force between them will
unchanged
decreased by 2 times
increased by 2 times
increased by 4 times
Answer explanation
Dịch đề: Nếu tăng khoảng cách giữa hai điện tích điểm và độ lớn mỗi điện tích lên 2 lần thì lực tương tác tĩnh điện giữa chúng sẽ
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