【摘要】 从金属电阻率与温度的线性关系出发,设计了测定金属电阻温度系数的实验方案。利用基本的电磁学仪器和热学仪器组合进行实验,以漆包铜线作为待测金属丝测定出铜的电阻温度系数,分析了导致系统误差产生的主要原因,并就待测金属丝的选取原则、温度控制的方法进行了讨论。更多还原

【Abstract】 Designing an experiment to measure the temperature coefficient of mental resistance basing on the linear relation between metallic resistivity and temperature.The main experimental instruments are the basic electromagnetic instruments and calorifics instruments.We measure the temperature coefficient of resistance of copper using enamelled copper wire,analyze the reason to cause errors,and demonstrate the feasibility of the experiment after analyzing the results.Discussing the wire to be determined and the control of temperature.更多还原