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huonglien.1910vlk10
2 năm trước
Câu 7. Trên một bóng đèn có ghi 6V, em hiểu như thế nào về con số ghi trên bóng đèn? bóng đèn này có thể sử dụng tốt nhất với hiệu điện thế bao nhiêu? Câu 8. Dòng điện là gì? các tác dụng của dòng điện ? Câu 9. Quy tắc an toàn khi sử dụng điện? Giúp đi làm ơn nhanh lên nhé
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