Physics, 15.06.2021 14:00 erica437

mỗi giây có 2,1*10^5 electron đập vào màn hình tivi. cường độ dòng điện trong đèn hình của tivi là bao nhiêu?

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mỗi giây có 2,1*10^5 electron đập vào màn hình tivi. cường độ dòng điện trong đèn hình của tivi là b...