【摘要】 普通物理实验中,普遍使用磁场描绘仪描绘磁场,现有仪器的探测线圈上所测得的电压很小,而外界干扰较大,使得实验效果比较差。通过对磁场描绘仪的改进,提高了探测线圈的感应电压,从而使实验效果明显改善。更多还原

【Abstract】 In general physics experiments, the magnetic field is mainly painted by the magnetic field painting apparatus.Because of the littleness of the voltage in detective coil and the outside disturbance, the experiment result is not good. Through amplifying the inductive voltage in detective coil, we meliorate the apparatus and thus improved the experiment result considerably.更多还原