Physics, 21.10.2021 14:00 Nessakona1
Hai điện tích điểm q1 = 2.10-2 μC và q2 = - 2.10-2 μC đặt tại hai điểm A và B cách nhau một đoạn
a = 30 cm trong không khí. Cường độ điện trường tại điểm M cách đều A và B một khoảng bằng a có độ
lớn là
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Hai điện tích điểm q1 = 2.10-2 μC và q2 = - 2.10-2 μC đặt tại hai điểm A và B cách nhau một đoạn
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