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一个空心线圈里放一空心铁管和放一实心铁棒电感量如何变化,为什么?
实心铁棒的电感量大。
铁棒中间铁的磁感应系数比铁管中间空气的感应系数大，则同样位置铁棒的磁感应强度更高，对所有面积的积分铁棒也就更高了。
