꧁aaaaa꧂Giải sbt Khoa học tự nhiên 7 chương VI từ - Kết nối tri thức với cuộc sống

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🐻Giải sách bài tập Khoa học tự nhiên 7 - Kết nối tri thức, SBT KHTN 7 - KNTT

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Bài 18. Nam châm
Có hai thanh nam châm. Thanh nam châm thứ nhất được sơn màu, một nửa màu xanh trên ghi chữ S, nửa kia màu đỏ trên ghi cữ N ꧑ Xem lời giải
Bài 19. Từ trường
Trong thí nghiệm Osterd, một kim nam châm tự do đặt cân bằng song song với một đoạn dây dẫn AB, khi cho dòng điện chạy vào trong dây dẫn, thì kim nam châm quay lệch khỏi vị trí ဣ Xem lời giải

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Bài 20. Chế tạo nam châm điện đơn giản
Làm thế nào để thay đổi từ cực của nam châm điện? 🃏 Xem lời giải

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Bài 18. Nam châm

Bài 19. Từ trường

Bài 20. Chế tạo nam châm điện đơn giản