如图所示当�动变阻器r2的�片�到a端时开关s闭合这时电流表示数为075a标有“6v3w 的小灯泡正常�光开关s断开变阻器划片 Sketch Coloring Page

如图所示当�动变阻器r2的�片�到a端时开关s闭合这时电流表示数为075a标有“6v3w 的小灯泡正常�光开关s断开变阻器划片 Template

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sketch #3242 Jolteon by Välë Chäpärrö Järämïllö

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sketch #2464 Spongebob by sketchmaster

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sketch #2434 Metallica

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sketch #4874 Milla Jovovich by Kimmy Kitty Perry Priemus

anonymous

anonymous
sketch #4874 Milla Jovovich by Kimmy Kitty Perry Priemus

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sketch #249 Rocket

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sketch #5197 Rihanna by Ben Hall

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sketch #4895 Cat by Gaurav Patel

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sketch #12 my bear

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tomski如图所示当�动变阻器r2的�片�到a端时开关s闭合这时电流表示数为075a标有“6v3w 的小灯泡正常�光开关s断开变阻器划片 coloring

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 05A”，电流表A的量程为006A，电压表量程为0 sketch template

题目如图所示电源电压保持不变闭合开关后当�动变阻器的�片由左�右移动时下列判断正确的是A 电压表示数变大B 电流表示数变大C sketch template

如图所示的电路中电源的电压保持不变R1为定值电阻R2为�动变阻器闭合开关S�片P�右移动时则A．电流表A的示数变大B．电压表V的示 sketch template

如图所示电源电压保持恒定电阻R的阻值与�动变阻器最大阻值之比为23当S1闭合S2断开�动变阻器的�片P在AB的中点时小灯泡所消耗 sketch template

如图所示的电路中R0为�动变阻器R1R2为定值电阻且R1＜R2E为电压恒定的电源．当开关S闭合后�动变阻器的�片P�右�动时流过 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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

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电路中闭合开关S当�动变阻器的�片P�左�动时电流表的示数 电压表的示数 选填“不变 “变大或“变小 ——青夏教育 sketch template

题目如图所示电路中电源电压恒为 6V�动变阻器上标有“50Ω 15A 字样将�片 P 移到最右端闭合开关 S1 和 S2读出 sketch template

如图所示电路电源电压为6V电阻R2为10Ω�动变阻器R1的最大阻值是20Ω当�片P移到a端时电压表读数是6V当�片P移到b端时 sketch template

如图15所示的电路�动变阻器的�片P固定在它的中点时连入电路的电阻值为R当只闭合K1时R与R1上的电压之比是12当只闭合K2时R sketch template

如图所示当开关S断开�动变阻器的�片P置于a端时电流表的示数为03A当开关S闭合�片P置于b端时电流表的示数为05A．已知R1 sketch template

题目如图所示R1为定值电阻R2为�动变阻器当变阻器的�片P�右移动时图中电压表和电流表的示数变化情况及它们示数的比值U/I变化情况 sketch template

如图所示电路总电压U保持不变�动变阻器总电阻为2R当�动片位于变阻器中点O时四个电流表A1A2A3A4的示数相等都等于I0当 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电源电压保持不变当闭合开关S�动变阻器的�片P�右移动的过程中下列说法中正确的是 A电压表V1的示数增大电压表V2的示数 sketch template

如图所示电源电压U保持不变R1=20Ω．当�动变阻器R2的�片P在最左端时电流表示数为05A若将�片P�至变阻器中点时电流表示数为 sketch template

如图所示电源电压恒定�动变阻器的规格为“30Ω 1A 在AB间接入规格为“12V 12W 的灯泡闭合开关当变阻器的五分之一阻值连入 sketch template

如图所示电路中电源的内电阻为rR1R3R4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

如图所示变阻器R为“40Ω 3A R1=20Ω当S断开�片P在中点时此时�动变阻器连人电路中的电阻为该�动变阻器最大阻值的1/2 sketch template

如图所示当变阻器的�片P置于某一位置时R1R2两端的电压分别为U1U2当�片P置于另一位置时R1R2两端的电压分别为U1′和U2 sketch template

在如图所示的电路中�动变阻器R1的电阻为200欧R2的电阻为50欧当�动变阻器�片P从a�到b时电压表的读数变化范围是 A sketch template

如图所示电路中电源电压不变R1为定值电阻R2为�动变阻器两个电压表V1V2分别接入电路不同位置．闭合开关S�右移动�片P�现电压 sketch template

如图所示的电路中U=120V�动变阻器R2的最大值为200ΩR1=100Ω．当�片P�至R2的中点时ab两端的电压为 A．40 sketch template

如图所示R1为定值电阻R2为�动变阻器当�动变阻器的�片P从最左端�右�动时下列说法中可能正确的是 AR1消耗的电功率不变 sketch template

如图所示电路图中电源两端电压保持不变当开关S1S2都断开�动变阻器的�片P在某点C时电压表V1V2的示数之比为34定值电阻R2 sketch template

如图所示的电路中R0为定值电阻R为�动变阻器．当�动变阻器两端电压为4V时通过的电流为02A此时�动变阻器接入电路的阻值是多大改变 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

如图所示当�动变阻器R2的�片�到a端时开关S闭合这时电流表示数为075A标有“6V3W 的小灯泡正常�光开关S断开变阻器划片 sketch template

如图所示电路电源电压不变．当�动变阻器R2的�片P�右移动时电路的总电阻将变大变大电流表A的示数将变小变小电压表V1的示数将变小变小 sketch template

如图所示电源电动势为E内阻为rR1＞r当电路中�动变阻器R2的�动触头P�上�动时以下说法正确的是 A．电容器C的下极板的带电量 sketch template

如图所示电源电压 U=12V电阻R1=100Ω变阻器R2的最大电阻值是60Ω闭合开关S当�片P从R2的左端移到右端的过程中电压表 sketch template

如图所示R0为定值电阻R为�动变阻器当变阻器�片P�到M点时电压表读数为9伏当变阻器�片P�到N点时变阻器连入电路的阻值为�片P� sketch template

如图所示电路�动变阻器�片P�b端�动时A电流表A1示数变大A2示数变小电压表V示数不变B电流表A1示数变小A2示数变小电压表V sketch template

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