Hang Nguyen

2 năm trước

1 đoạn mạch điện gồm hai dây điện trở R1=30,R2=15 mắc nối tiếp. HĐT ở 2 đầu luôn không đổi bằng 9V. A. Tìm cuòng độ dòng điện qua mạch B. Tìm HĐT giữa hai đâu mỗi dây dẫn, công suất điện của đoạn mạch C. Nếu thay dây dẫn có điển trở R1 bằng bóng đèn Đ(6V - 2,4W) thì đèn có sáng bình thường không?Tại sao?

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Thuỳ Nguyễn

2 năm trước

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Choose the best answer.
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Choose the best answer.I think that ______ cauliflower is not enough for 3 people. Let’s buy one more.

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Choose the best answer.
I think you should buy ___ pack of mineral water instead. And you can also buy _ snacks such as potato crisps, 3 kilos of mandarins, 2 kilos of apples, 3 bunches of bananas, ____ cookies and soft candies.

Choose the best answer.
We should decorate our living room with _ orange banner. We also need ____ ribbons, balloons, party hats and costume.

Choose the best answer.
I think that ______ cauliflower is not enough for 3 people. Let’s buy one more.