论文部分内容阅读
在中学物理教学中,经常看到一些老师因电阻的表达式R=ρl/S、R=U/I、R=(ΔU)/(ΔI)而争论,都因没有有说服力的论据而不了了之,一些刊物也曾刊登过关于这一问题的文章,但对上述两个表达式所涉及的内涵诠释不多,对电阻是否可
In middle school physics teaching, it is often seen that some teachers argue over the resistance expressions R = ρl / S, R = U / I, R = (ΔU) / (ΔI), all because there is no convincing argument In addition, some publications have published articles on this issue, but they do not interpret the implications of the above two expressions,