user-avatar
thuycoi309
2 năm trước
Đặt một hiệu điện thế U vào hai đầu đoạn mạch gồm 2 điện trở R1=2Ω,R2=4Ω mắc song song .Biết cường độ dòng điện chạy qua R1 bằng 1A .Tính cường độ dòng điện chạy qua R2 * 2A 1,5A 1A 0,5A
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

2. Read the article and then decide whether the statements are true (T) or (F). After school Kien usually goes swimming. He goes to the swimming pool five times a week. His swimming pool is very good. The pool is 25 metres long and has six lanes. More than a thousand children have swimming lessons there every month. His swimming instructor is experienced and friendly, but she is also strict. She Lessons last 45 minutes, but he usually trains for an hour and a half. During the lesson he swims about two kilometers. His favourite swimming styles are crawl an backstroke. He practices a lot to improve his swimming skills. He wants to achieve good results. Last month he participated in a swimming competition. Ten swimmers from three schools took part in the competition. He won first prize. Swimming is his favourite sport. Swimming is interesting and pleasant, and it helps him to keep fit. True or False? Kien goes to home after school. He practices swimming five times a month. His swimming instructor is so hard. He swims about five kilometers during the lesson. The best friend won first prize in the swimming competition.

2018 © Loga - Không Ngừng Sáng Tạo - Bùng Cháy Đam Mê
Loga Team