引言我们在中学物理中学习了长直密绕通电螺线管内部的磁场是匀强磁场,那么,在长直密绕螺线管内部是否为匀强磁场?磁感强度的大小与哪些因素有关?在此,我们设计实验,利用控制变量法,研究影响通电螺线管内部的磁场强弱的影响因素,螺线管是自己绕制的,测量螺线管内部磁感强度所用仪器是山东远大网络多媒体有限公司生产的朗威(r) Introduction We learned in the physics of the long straight around the solenoid inside the solenoid is a uniform magnetic field, then, in the long straight around the solenoid is a uniform magnetic field? Magnetic induction intensity and the size of what factors Here, we design experiments, the use of control variables method to study the influence of the magnetic field strength of the solenoid inside the power of the solenoid, the solenoid is their own winding, measuring the magnetic induction within the solenoid used by the instrument is Shandong lofty Network Multimedia Co., Ltd. production of Long Wei (r)