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中学物理涉及许多电磁感应的情景,在匀强磁场中有针对导体棒、圆盘、线圈切割磁感线而设计的问题;在非匀强磁场中有针对辐向磁场、条形磁铁的磁场而设计的问题.各种形式动生电磁感应的实质就是导体棒切割磁感线.
Middle school physics involves a lot of electromagnetic induction scenarios, in the uniform magnetic field for conductor bar, disk, coil cutting magnetic induction line design problems; in non-uniform magnetic field for the radial magnetic field, the magnetic field of the bar magnet and Design issues. The essence of various forms of dynamic electromagnetic induction is the conductor bar cutting magnetic induction line.