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电流表与电压表是重要的电学测量仪表,它们的外部形状和使用规则,既有相同之处,又有天壤之别。我们充分利用新授、复习和辅导课时,先后安排下列学生实验,收到了非常好的教学效果。一、探究电流表的使用规则探究1:电流进出表(?)的规则教师先展示教学用的大型电表并指出:它的指针是固
Ammeters and voltmeters are important electrical measuring instruments. Their external shapes and usage rules are both the same and different. When we took full advantage of the new grants, reviews and tutorials, we arranged the following student experiments and received very good teaching results. 1. Exploring the rules for the use of ammeters. Inquiry 1: The rules for the current in and out of the table (?) The teacher first displays the large-scale electricity meter for teaching and points out that: Its pointer is solid