家庭電路中下列各個(gè)器件的作用是:

1)電能表:_________________________________________________________

2)熔斷器:_________________________________________________________。

3)閘刀開(kāi)關(guān):_______________________________________________________。

 

答案:見(jiàn)詳解
解析:

1)測(cè)量電路所消耗電能的多少 

2)電流過(guò)大時(shí)會(huì)自動(dòng)切斷電路 

3)便于切斷電源以維修電路或更換電器

 


提示:

該題考查的知識(shí)點(diǎn)是家庭用電和安全用電

 


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