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dxduong186
2 năm trước
Hai điện trở R1=10ohm và R2=20ohm mắc nối tiếp vào một nguồn điện. Sau một thời gian kể từ khi đóng mạch, nhiệt lượng tỏa ra trên R2 lớn hơn nhiệt lượng tỏa ra trên R1 là 10KJ. Tính nhiệt lượng tỏa ra trên mỗi điện trở trong thời gian trên.
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