Tìm kiếm
Lê Tuấn Khôi
2 năm trước

b) Biến trở trên được làm bằng dây hợp kim nicrom có điện trở suất là 1,1. và có chiều dài là 80m. Hãy tính đường kính tiết diện của dây dẫn làm biến trở trên.

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thanhthuy770
2 năm trước

Đáp án:sao bạn ngu vậy

 

Giải thích các bước giải:

 

Thanh Nhân
2 năm trước

Đáp án: 4,4 mét vuông

 

Giải thích các bước giải: 

 

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