Mạch điện gồm 3 điện trở: R1 = 2Ω, R2 = 5Ω, R3 = 3Ω, cường độ dòng điện 1,2A. Hiệu điện thế hai đầu mạch?
Mạch nối tiếp . Mạch song song. Mạch hỗn hợp

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Physics
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9th Grade
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Hard
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1.
FLASHCARD QUESTION
Front
Back
C. 12V
2.
FLASHCARD QUESTION
Front
R1 = 30, R2 = 15 in series. What is R3 for total resistance of 85?
Back
A. 40
3.
FLASHCARD QUESTION
Front
Hai điện trở R1 và R2 mắc nối tiếp, R1 = 2R2, ampe kế 1,8A, UMN = 54V. Tính R1 và R2.
Back
R1 = 20 ; R2 = 10
4.
FLASHCARD QUESTION
Front
Mạch gồm R1 = 3Ω, R2 = 8Ω, R3 = 7Ω, UAB = 36V. Tính cường độ dòng điện.
Back
B. 2A
5.
FLASHCARD QUESTION
Front
Hai điện trở R1 = 6Ω và R2 mắc song song, I = 1,2A, I2 = 0,4A. Tính R2.
Back
B. 12 Ω
6.
FLASHCARD QUESTION
Front
Mạch gồm R1 = 6 Ω, R2 = 3 Ω song song, hiệu điện thế 6V. Điện trở và cường độ dòng điện?
Back
R = 2 Ω, I = 3A
7.
FLASHCARD QUESTION
Front
Hai điện trở: R1 = 15 (2A), R2 = 10 (1A). Hiệu điện thế tối đa cho R1 và R2 song song?
Back
10V
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