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Một khu dân cư có 500 hộ gia đình, trung bình mỗi hộ sử dụng 4 giờ một ngày với công suất điện 120W.
a) Tính công suất điện trung bình của cả khu dân cư
b) Tính điện năng mà khu dân cư này sử dụng trong 30 ngày
c) Tính tiền điện mà mỗi hộ và cả khu dân cư phải trả trong 30 ngày với giá 700đ/kW. h
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Một khu dân cư có 500 hộ gia đình, trung bình mỗi hộ sử dụng 4 giờ một ngày với công suất điện 120W....
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