Physics, 14.06.2021 16:20 dsaefong00

Hai quả cầu nhỏ, bằng kim loại, giống hệt nhau, tích điện Q1 và Q2, đặt tại A và B, lần lượt gây ra tại trung điểm M của AB các điện thế V1 = 200 V và V2 = – 300 V (gốc điện thế ở vô cùng). Nếu cho 2 quả cầu tiếp xúc nhau, rồi đưa về vị trí cũ thì điện thế tổng hợp tại M là bao nhiêu

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Hai quả cầu nhỏ, bằng kim loại, giống hệt nhau, tích điện Q1 và Q2, đặt tại A và B, lần lượt gây ra...

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