1.一只标有“PZ220-40”和一只标有“PZ220-100”的灯泡,若:(1)把它们并联在220V的电源上,问哪盏灯亮些?(2)把...
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电功、电功率计算专题训练P=UI=I2R=U2/R=W/tW=Pt=UIt=I2Rt=U2t/R电功率公式:电功公式:1.额定功率为2.5W的小...
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电学专题:电功率试题分类点拨和变式训练1.串联电路特点:⑴串联电路中的电流______________________________...
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1.(2011?自贡)如图所示,小灯泡?L?标有“8V 4W”字样。闭合开关,小灯泡正常发光,电流表的示数为?2A。求:(1)小...
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电学专题:电功率试题分类点拨和变式训练1.串联电路特点:⑴串联电路中的电流_____________________________...
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Evaluation Warning: The document was created with Spire.Doc for .NET.选择题训练1 . ( 2011绵阳)如图...
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1. (2011 )如图所示,小灯泡L标有8V 4W”字样。闭合开关,小灯 泡正常发光,电流表的示数为 2A。求:(1)小灯...
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(09襄樊)如图11所示的电路中,Ri = 6Q, R2=20Q, R3=30Q,电源电压保持不变。当Si、S,都闭合时,电流表的示数...
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电网无功功率计算DCounty continuation records has examined and approved the draft, spirit, believe, c...
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County continuation records has examined and approved the draft, spirit, believe, comprehensive Year...
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Evaluation Warning: The document was created with Spire.Doc for .NET.电功电功率计算题专项试作者:日期...
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(3)电20 Q IA ” 字样.1. ( 2011自贡)如图所示,小灯泡L标有“ 8V4W”字样。闭合开关,小灯泡正常发光,电...
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Evaluation Warning: The document was created with Spire.Doc for .NET.COOCO.因你而专业.可圈可点 http:...
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Evaluation Warning: The document was created with Spire.Doc for .NET.、电功:1 .定义: 。2 ?实质:...
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wordword1 / 12word电学专题:电功率试题分类点拨和变式训练1.串联电路特点:⑴串联电路中的电流___________...
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