天气预报 > 教育 > 测小灯泡电功率
测小灯泡电功率
更新时间: 2021-01-31 23:46:47  

1、用“伏安法”测定小灯泡的电功率,根据电功率的计算公式P=UI。

2、实验器材:电源、开关、电流表、电压表、滑动变阻器、小灯泡(额定电压2.5?V)、导线。

3、用电压表测量小灯泡两端的电压,用电流表测量通过小灯泡的电流,就可以求出小灯泡的实际功率。

关键词: 灯泡 电功率

测小灯泡电功率相关经验

天气预报

最新推荐

页面:/news/view-2451806/ | 耗时:0.6686 s | 内存:2.11 MB | 查询:4 | 缓存读取:3 写入:0 | 加载文件:25
select * from tbl_Articles WHERE ArticleID=2451806 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=2451806 LIMIT 0,1
select * from tbl_Articles_sphinx where id=2451806 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(2774334,437783,1999336,2773630,1168114,1292478,86265,1157472,408480,1085580,2319869,100695,985896,2050363,441359,787326,460916,918530,2093393,2661780,2316955,1459603,1489322,733151,489607,797454,100535,955493,2010703,655541) ORDER BY field (ArticleID,2774334,437783,1999336,2773630,1168114,1292478,86265,1157472,408480,1085580,2319869,100695,985896,2050363,441359,787326,460916,918530,2093393,2661780,2316955,1459603,1489322,733151,489607,797454,100535,955493,2010703,655541)