nyen2309

2 năm trước

Một đoạn mạch gồm 4 đoạn dây đồng chất ghép nối tiếp nhau. Các đoạn dây có cùng chiều dài nhưng tiếp diện lần lượt là 2mm2 4mm2 6mm2 8mm2. Đặt hiệu điên thế 100v vào hai đầu đoàn mạch nói trên thì hiệu điện thế hai đầu mỗi đoạn dây là bao nhiu

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Gia Huy Lê

2 năm trước

Đáp án:

cái đầu = 48 V

cái thứ 2 = 24V

cái thứ 3 = 16V

cái thứ 4 = 12V

Giải thích các bước giải:

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