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Physics, 20.06.2021 20:30 blaizelange4296

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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