9．如图所示电路中当变阻器r3的�动头p�b 端移动时 A．电压表示数变大电流表示数变小 b．电压表示数变小电流表示数变大 C Sketch Coloring Page

9．如图所示电路中当变阻器r3的�动头p�b 端移动时 A．电压表示数变大电流表示数变小 b．电压表示数变小电流表示数变大 C Template

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tomski9．如图所示电路中当变阻器r3的�动头p�b 端移动时 a．电压表示数变大电流表示数变小 coloring

9．如图所示电路中当变阻器R3的�动头P�b 端移动时 A．电压表示数变大电流表示数变小 B．电压表示数变小电流表示数变大 C sketch template

9．如图所示电路中当变阻器R3的�动头P�b 端移动时 A．电压表示数变大电流表示数变小 B．电压表示数变小电流表示数变大 C sketch template

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如图6所示电路中当�动变阻器的�动头P�右运动时有 A．电压表示数减小 B．灯L1变亮 C．灯L2变亮 D．灯L3变亮——青夏教育精英家教�—— sketch template

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9．如图3 3 15所示R1=3ΩR2=2ΩR=5Ω电源电动势=63V内阻r=05Ω．当�动变阻器活动触点在ab之间活动时 sketch template

如图所示电源电动势为E内阻为r电路中的R2R3分别为总阻值一定的�动变阻器R0为定值电阻R1为光敏电阻其电阻随光照强度增大而减小 sketch template

九年级物理全册课时提升作业十五变阻器含解析新版新人教版201711152112 Word文档在线阅读与下载免费文档 sketch template

如图所示，电源电压恒为18V，定值电阻R1=20Ω，�动变阻器R2标有“40Ω 05A”，电流表A的量程为006A，电压表量程为0 sketch template

在如图所示的电路中，电源电压保持不变，定值电阻R1的阻值为10Ω，�动变阻器R2上标有“2A”字样。闭合开关S，移动�片P至电路中的电流最大 sketch template

如图2所示的电路中电源电压不变开关闭合后若�动变阻器的�片P�右端移动则 A电压表的示数和电流表的示数都增大 B电压表的示数和电流 sketch template

如图所示电路中电源的内电阻为rR1R3R4均为定值电阻电表均为理想电表．闭合电键S当�动变阻器R2的�动触头P�右�动时电表的示 sketch template

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20．在如图所示电路中闭合电键S当�动变阻器的�动触头P�下�动时四个理想电表的示数都�生变化电表的示数分别用IU1U2和U3表示 sketch template

如图a所示电路电源电压保持不变�动变阻器R2上标有“50W 2A 字样闭合电键后当�片位于中点位置时电流表A1和A2的示数均如图 sketch template

如图所示电路中电源电压为30V定值电阻为30Ω�动变阻器标有“60Ω15A 字样在该电路正常使用的情况下电路消耗的最大功率 W sketch template

如图所示电路中各个电阻R1＝3ΩR2＝4ΩR3＝12ΩR4＝3ΩR5＝5Ω电路中总电流强度为12A试求1通过电阻R3的 sketch template

在如图所示电路中电源电动势E=6V内阻r=1Ω保护电阻R=6Ω�动变阻器总电阻R=20Ω现闭合电键S问在�片P从a�到b的过程中 sketch template

如图甲所示电路中R1是�动变阻器R2是定值电阻电源两端电压保持不变．当�动变阻器�片P从最右端�到最左端电压表示数随电流变化的图象如图 sketch template

如图所示电路电源两端电压一定．当开关S断开�动变阻器接入电路的电阻为Ra时通过电阻Ra的电流为I1电阻R1和电阻R2消耗的功率之和P1 sketch template

如图所示的电路中电源电压保持不变R1为定值电阻R2为�动变阻器．闭合开关S时当�片P在某一端点时电流表示数为01AR2消耗的电 sketch template

如图所示电路中电源电动势为E内阻为r电阻R2R3为定值电阻R1为�动变阻器AB为水平放置的电容器的上下两个极板．当�动变阻器R1 sketch template

1．在如图所示的电路中R1=R2=R3在ac间和bc间均接有用电器且用电器均正常工作设R1R2R3上消耗的功率分别为P1P2 sketch template

如图所示电路中电阻R1R2R3R4=1234C为电容器为电流表当电路中某个电阻断路瞬间�现有自上而下的电流通过电流表则 sketch template

8．如图所示电路R2=24ΩR1是0 20Ω的�动变阻器电源电压U=6V且保持不变．当闭合开关S后通过R2的电流为 A．如果电流表 sketch template

如图所示电源电压不变�动变阻器上标有“50Ω 1A 的字样电阻R1的阻值为10Ω当开关S闭合后�动变阻器的�片置于最左端时电流表的 sketch template

在如图所示的电路中电源电压为12伏且保持不变定值电阻R1的阻值为20欧�动变阻器R2上标有“20Ω 1A 字样．闭合电键S电压表示数为 sketch template

如图所示电路中各个电阻R1＝3ΩR2＝4ΩR3＝12ΩR4＝3ΩR5＝5Ω电路中总电流强度为12A试求1通过电阻R3的 sketch template

如图8所示电路中电阻R1=8 ΩR2=10 ΩR3=20 Ω电容器电容C=2 μF电源电动势E=12 V内电阻r不计开关S闭合 sketch template

如图a所示电路中电源电压为9伏且保持不变电压表量程0 3伏电流表量程0 06安定值电阻R1=20欧�动变阻器标有“15欧 2安 sketch template

在如图所示的电路中当�动变阻器R的�动片P�下移动时以下判断中正确的是 A电源内部�热功率变小 B小电珠L变亮 C电流表上读数 sketch template

在如图所示的电路中电源电压保持不变电阻R1 的阻值为20Ω闭合开关S电流表A1的示数为03A电流表A 的示数为05A．求1 sketch template

在如图所示的电路中电源电压保持不变电阻R1的阻值为20Ω．闭合开关S电流表A的示数为06A电流表A1的示数为04A．求1电源 sketch template

如图所示电路中电阻R1=8 ΩR2=10 ΩR3=20 Ω电容器电容C=2 μF电源电动势E=12 V内电阻r不计开关S闭合当 sketch template

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