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từ trường

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  • ON TAP BAI CUCau 1:lc tng tac gia cac ien tch ng yen la lc g?

    Cau 2:Dang vat chat nao ton tai xung quanh cac ien tch ng yen?Lc ienien trng

  • CAU HOI BAI MICau 1:lc tng tac gia cac ien tch chuyen ong la lc g?Cau 2:Dang vat chat nao ton tai xung quanh cac ien tch chuyen ong?

  • BAI 19: T TRNGI. NAM CHAM.1.khai niem:SAT NONNIKENCOBANMANGANGaoliniumDisprosiumNhng chat co kha nang hut sat goi la nam chamNAM CHAMNam cham co the c cau tao t nhng nguyen to tren

  • satsatsatHut sat manh nhatHut sat yeucccc

  • Phan hut sat manh nhat goi la cac cc cua nam chamKhi khong co nam cham nao khac hoac 1 dong dien nao khac at gan kim nam cham th kim nam cham luon nam theo hng bac nam.Do vay hai cc cua nam cham c at la cc nam va cc bac.South(Bac)North(Nam)

  • HAI NAM CHM KHC TN TH HT NHAU2.AC IEM

  • HAI NAM CHAM CUNG TEN AY NHAU

  • Ket luan:Hai nam cham cung ten ay nhau hai nam cham khac ten hut nhau.Lc tng tac gia cac nam cham goi la lc t va cac nam cham goi la co t tnh.

  • II. T TRNG CUA DAY DAN CO DONG IEN1. Th nghiem DONG IENLc t do dong ien tac dung len nam chamHnh 19.3

  • Chu y trong hnh 19.3

    K hieu :co ngha la lc hng ve pha sau mat phang hnh ve.

    co ngha la lc hng ve pha trc hnh ve

  • HNH 19.4:Lc t do nam cham tac dung len dong ien.

  • Hai dy dn mang dng in cng chiuHNH 19.5 A

  • Hai dy dn mang dng in ngc chiuHNH 19.5 B

  • Dong ien co the tac dung len nam cham Nam cham co the tac dung len dong ienHai dong dien co the tac dung lan nhau.Lc tng tac gia nam cham vi nam cham ,nam cham vi dong ien ,gia dong ien vi dong ien goi la lc t.Nam cham va dong ien co t tnh.Ket luan

  • III.T TRNG1.NH NGHA.S xuat hien cua lc ien ngi ta a ra khai niem.

    Nh vay s xuat hien cua lc t ta a ra khai niem nao ay?IEN TRNGT TRNG

  • NH NGHA :T trng la dang vat chat ton tai trong khong gian ma bieu hien cu the la s xuat hien cua lc t tac dung len mot dong ien hay mot nam cham at trong o.

  • 2.Cach nhan biet s co mat cua t trnga)b)

  • Nh vay e nhan biet co t trng hay khong ta a nam cham th vao neu nam cham th lech so vi phng ban au th xung quanh nam cham th co t trng.Ngi ta quy c :hng cua t trng tai mot iem la hng nam bac cua kim nam cham nho nam can bang tai iem o.