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Physics, 21.06.2021 20:00 2alshawe201
Đặt vào đầu hai dây dẫn cùng một hiệu điện thế bằng nhau U, có điện trở lần lượt là R1 và R2.Ta thấy cường độ dòng điện qua dây dẫn thứ nhất I1 lớn gấp hai lần cường độ dòng điện qua dây dẫn thứ 2 I2
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Đặt vào đầu hai dây dẫn cùng một hiệu điện thế bằng nhau U, có điện trở lần lượt là R1 và R2.Ta thấy...
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