Physics, 15.06.2021 08:10, jhonnysoriano9053

Đặt lần lượt các điện tích 1q 1nC  ; 2 q 1nC  ; 3q 1nC  ; 4q 1nC  vào các đỉnh A, B, C, D của hình chữ nhật, kích thước 20cm 40cm  trong không khí. Tính điện thế tại O là giao điểm của hai đường chéo hình chữ nhật, chọn gốc điện thế tại vô cùng.

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Đặt lần lượt các điện tích 1q 1nC  ; 2 q 1nC  ; 3q 1nC  ; 4q 1nC  vào các đỉnh A, B, C, D của...