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Physics, 24.11.2021 14:00 shaylarreyes

Mắc bóng đèn nối tiếp với một điện trở R=12 ôm vào hiệu điện thế 18V. Một ampe kế đo cường độ dòng điện mạch chính -vẽ sơ đồ mạch điện
-tính điện trở tương đương của đoạn mạch
-tính số chỉ ampe kế
-đèn có sáng bình thường không ?vì sao

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Mắc bóng đèn nối tiếp với một điện trở R=12 ôm vào hiệu điện thế 18V. Một ampe kế đo cường độ dòng đ...
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