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【实验指导】新版教科版小学科学四年级下册2.8模拟安装照明电路
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理解与应用
电路连接的方法有串联和并联两种。我们家里的家用电器一般都是并联的。一节电池的电压是1.5V，两节电池串联起来的电压就是3V。所以把电池串联起来小灯泡会更亮些。两节电池并联起来，电压还是1.5V，所以小灯泡不会太亮。
电路中的电压超过了小灯泡上标的1.5V，灯泡太亮会烧坏灯泡的。电池串联，电压为3V，小灯泡亮，电池并联，电压仍然是1.5V，小灯泡暗。
精炼反馈
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