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6.1 电压

6.1 电压. —— 镇赉蒙中赵月. 6.1 电压. 概念:使电路形成电流的原因。. 单位:伏特( v ) 千伏( kv ) 毫伏( mv ). 1 . 电压 ( U ). 1kv=10 3 v 1mv=10 -3 v. 常见电压值:. ( 1 )与被测用电器或电路 并联. ( 2 )“ - ” 接线柱靠近电源的负极 “ + ” 接线 柱靠近电源的正极。. 2. 怎样连接电压表. ( 3 )选择合适的量程。. ( 1 )认清量程和分度值. 3. 怎样在电压表上读数. ( 2 ) 观察指针偏转后所对的刻度值. ( 3 )视线与刻度盘垂直.

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6.1 电压

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  1. 6.1 电压 ——镇赉蒙中赵月

  2. 6.1电压 概念:使电路形成电流的原因。 单位:伏特(v) 千伏(kv) 毫伏(mv) 1.电压 (U) 1kv=103v 1mv=10-3v 常见电压值: (1)与被测用电器或电路并联 (2)“-”接线柱靠近电源的负极“+”接线 柱靠近电源的正极。 2.怎样连接电压表 (3)选择合适的量程。 (1)认清量程和分度值 3.怎样在电压表上读数 (2)观察指针偏转后所对的刻度值 (3)视线与刻度盘垂直 表 题

  3. L1 L2 思考:电压表的使用和电流表的使用有什么异同点? 共同点:(1)都要选择合适的量程 (2)都要弄清分度值后再读数 (3)都要使电流从正接线柱流进,从负接线 柱流出。 不同点:(1)连接方法不同。 (2)电流表两接线柱决不允许直接连到电源 的两极上,而电压表可以。 练习:1、L1和L2串联,用电压表测出L1两端的电压。完成连接图

  4. A V 2.按电路图进行实物连接

  5. 欢迎指导 谢谢

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