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Domaifo
2 năm trước
Hai điện tích điểm q1 = -10-7 C và q2 = 5.10-8 C đặt tại hai điểm A và B trong chân không cách nhau 5 cm. Xác định lực điện tổng hợp tác dụng lên điện tích q3 = 2.10-8 C đặt tại điểm C sao cho: a) CA = 2cm; CB = 3cm b) CA = 10cm; CB = 5cm c) CA = 3 cm, CB = 4 cm.
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