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buoitaybuoita
2 năm trước
Câu 1: a, Vẽ sơ đồ mạch điện gồm có Nguồn điện có hiệu điện thế ko đổi bằng 12V và D1(10V-2W), D2(12V-3W), một biến trở con chạy và các đoạn dây nối sao cho các đèn sáng bình thường. b, Khi các đèn sáng bình thường. Tính giá trị của biến trở tham gia vào mạch khi đó. Lm nhanh hộ mk cái.Cụ thể nha.Mk vote 5 sao cho
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