Physics, 17.06.2021 22:00 tanoah5729
Một dây chì có đường kính tiết diện ngang 1,2 mm. Nếu mật độ dòng điện giới hạn của chì là 450 A/cm2 sẽ thì cường độ dòng điện giới hạn chạy qua dây chì này là bao nhiêu?
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Một dây chì có đường kính tiết diện ngang 1,2 mm. Nếu mật độ dòng điện giới hạn của chì là 450 A/cm2...
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