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tramlethanh38
2 năm trước
vẽ sơ đồ mạch điện gồm nguồn điện 2 pin 1 khóa k và 2 bóng đèn mắc nối tiếp 1 ampe kế 1 vôn kế đo hiệu điện thế của bóng số 1 a) số chỉ của vôn kế là 2 vôn, guồn diện gồm 4 viên bi. Hỏi hiệu diện thế ở mỗi bóng là bao nhiêu? b) nếu cường độ dòng điện qua bóng số 2 bằng 1 ampe thì cường độ dòng điện của bóng 1 là bao nhiêu và số chỉ của ampe kế khi đó là bao nhiêu
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