在交流电一章中,很多同学对于“瞬时值”、“最大值”、“有效值”和“平均值”这四个类似但又有区别的物理量,容易产生混淆.本文现通过几个特例对这四个值加以解析.一、瞬时值——关于霓虹灯亮灯时间的计算交流电的瞬时值反映了交流电不同时刻的大小和方向,正弦交流瞬时值表达 In the AC chapter, many students are prone to confusion about four similar but distinct physical quantities such as “instantaneous value,” “maximum value,” “effective value,” and “average value.” The four values ​​to be resolved.An instantaneous value - on the neon light time calculation The instantaneous value of alternating current reflects the size and direction of the AC at different times, the expression of the instantaneous sinusoidal AC value