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1249《电路的组成》电子教案0.00B0.00Botherzyf唐开生zyfPE.SiteConfig.SkinPathMMskin/images/userface.png
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唐开生0电路中考物理网2004年10月11日/UploadFiles/jazx_UploadFiles_352/2004101122316336.swf
电路:装有干电池的手电筒,揿下按钮(开关)就亮,这是什么道理?这是因为手电筒里有:电源--供电的器件
电路:装有干电池的手电筒,揿下按钮(开关)就亮,这是什么道理?这是因为手电筒里有:电源--供电的器件;用电器--小灯泡,利用电流工作的器件;开关--控制电路通断的器件等元件开成了电流的通路的缘故. 我们把:用导线把电源、用电器、开关等连接起来组成的电的路径叫做电路.(见下图中的电路)
通路:电路接好后,闭合开关,处处相通的电路叫通路.如下图所示,合上开关小灯泡发光,这时的电路就叫做通路.
开路:开关未闭合,或电线断裂、接头松脱致使线路在某处断开的电路,叫开路.下图中的开路a是属于开关未闭合的情况;开路b中开关虽然闭合,但中间断线,属于电线断裂的情况.
短路:导线不经过用电器直接跟电源两
【内容简介】
电路:装有干电池的手电筒,揿下按钮(开关)就亮,这是什么道理?这是因为手电筒里有:电源--供电的器件;用电器--小灯泡,利用电流工作的器件;开关--控制电路通断的器件等元件开成了电流的通路的缘故. 我们把:用导线把电源、用电器、开关等连接起来组成的电的路径叫做电路.(见下图中的电路)
通路:电路接好后,闭合开关,处处相通的电路叫通路.如下图所示,合上开关小灯泡发光,这时的电路就叫做通路.
开路:开关未闭合,或电线断裂、接头松脱致使线路在某处断开的电路,叫开路.下图中的开路a是属于开关未闭合的情况;开路b中开关虽然闭合,但中间断线,属于电线断裂的情况.
短路:导线不经过用电器直接跟电源两极连接的电路,叫做短路.如下图中的短路a是属于导线不经过用电器直接跟电源连接的情况.短路b是用电器虽接入电路,但连接不正确造成的电路.
电路:装有干电池的手电筒,揿下按钮(开关)就亮,这是什么道理?这是因为手电筒里有:电源--供电的器件;用电器--小灯泡,利用电流工作的器件;开关--控制电<P>
<P><STRONG><FONT color=#ff0000 size=2>电路:</FONT></STRONG><FONT color=#090909 size=2>装有干电池的手电筒,揿下按钮(开关)就亮,这是什么道理?这是因为手电筒里有:电源--供电的器件;用电器--小灯泡,利用电流工作的器件;开关--控制电路通断的器件等元件开成了电流的通路的缘故.<BR> 我们把:用导线把电源、用电器、开关等连接起来组成的电的路径叫做电路.(见下图中的电路)</FONT></P>
<P align=center><FONT color=#090909>
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<P><FONT size=2><FONT color=#090909><STRONG><FONT color=#f70909>通路:</FONT></STRONG>电路接好后,闭合开关,处处相通的电路叫通路.如下图所示,合上开关小灯泡发光,这时的电路就叫做通路.</FONT></FONT></P>
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<P><FONT size=2><FONT color=#090909><STRONG> <FONT color=#ff0000>开路:</FONT></STRONG>开关未闭合,或电线断裂、接头松脱致使线路在某处断开的电路,叫开路.下图中的开路a是属于开关未闭合的情况;开路b中开关虽然闭合,但中间断线,属于电线断裂的情况.</FONT></FONT></P>
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<P><FONT size=2><FONT color=#090909><STRONG><FONT color=#ff0000>短路:</FONT></STRONG>导线不经过用电器直接跟电源两极连接的电路,叫做短路.如下图中的短路a是属于导线不经过用电器直接跟电源连接的情况.短路b是用电器虽接入电路,但连接不正确造成的电路.</FONT></FONT></P>
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