Physics
Physics, 17.06.2021 18:30, KubraDskn

Dòng điện 2A không đổi đi qua ắc-quy 6V - 2Ω từ cực (+) sang cực (-). Ắc-quy là nguồn phát hay máy thu? Bỏ qua điện trở của dây nối. Công suất nhiệt tỏa ra ở ắc-quy là A. Máy thu; 8 W. B. Nguồn phát; 4 W. C. Máy thu; 2 W. D. Nguồn phát: 3 W.

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Dòng điện 2A không đổi đi qua ắc-quy 6V - 2Ω từ cực (+) sang cực (-). Ắc-quy là nguồn phát hay máy t...

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