7．如图5所示r1r2为定值电阻l为小灯泡r3为光敏电阻当照射光强度增大时 A．电压表的示数增大 b．r2中电流减小 c Sketch Coloring Page

7．如图5所示r1r2为定值电阻l为小灯泡r3为光敏电阻当照射光强度增大时 A．电压表的示数增大 b．r2中电流减小 c Template

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tomski7．如图5所示r1r2为定值电阻l为小灯泡r3为光敏电阻当照射光强度增大时 a．电压表的示数增大 coloring

7．如图5所示R1R2为定值电阻L为小灯泡R3为光敏 电阻当照射光强度增大时 A．电压表的示数增大 B．R2中电流减小 C sketch template

两个定值电阻R1、R2并联在电路中如图甲所示它们的电流与其两端的电压关系如图乙所示闭合开关S则R1R2产生的热量之比为 A sketch template

如图所示的电路中R0为�动变阻器R1R2为定值电阻且R1＜R2E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

如图所示的电路中R0为�动变阻器R1R2为定值电阻且R1＜R2E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

题目如图所示的电路中电源电压不变R1 为定值电阻R2为�动变阻器闭合开关 S 后在�片P从最左端�中点移动的过程中下列说法正确 sketch template

人教版物理九年级上第十七章第二节细化知识点同步练习——欧姆定律的图像问题（1）在线组卷 sketch template

如图1所示的电路中R1为定值电阻R2为�动变阻器电源电压不变．闭合开关S后�片P从a端移动到b端电流表示数I与电压表示数U的变化关系 sketch template

如下左图所示是标有“25V 字样的小灯泡L的电阻随它两端电压变化的图象将小灯泡L和电阻R接入右图所示的电路中电源电压为6V当开关S断开 sketch template

如图甲所示R1为�动变阻器R0R2为定值电阻电源电压U保持不变．建立直角坐标系横轴表示电流纵轴表示电压．改变�动变阻器�片P的位置 sketch template

如图甲所示是两电阻R1R2各自的U I图线求1电阻R1的阻值为多大2如果把R1R2两个电阻串联接成如图乙所示的电路时电流 sketch template

如图所示为两个用电器的电流电压关系图象．请你根据图象答出关于用电器两个方面的信息．图象Ⅰ为定值电阻图象Ⅱ电阻变化的．题目和参考答案——青 sketch template

题目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．闭合开关S移动�片P多次记录电压表示数U和对应的电流表示数I则绘 sketch template

如图8所示电源两端的电压保持不变R0为定值电阻将�动变阻器的�片P置于最右端闭合开关S移动�动变阻器的�片P到某一位置此时�动 sketch template

百度教育 sketch template

在如图甲所示的电路中R0为定值电阻R为�动变阻器电源电压不变闭合开关S后调节�片P从a端移动到b端过程中电流表示数I与电压表示数U sketch template

如图甲所示是小明“探究电流与电压、电阻的关系”的实验电路图。选用的实验器材是：电源3V、电流表（00 6A）、出卷� sketch template

“探究电流与电阻关系”的实验实物图如图甲所示，定值电阻的阻值分别为5Ω、10Ω、15Ω、20Ω。（1）连接电路时�现，电路中有一根导线连接错误 sketch template

题目如图甲所示的电路电源电压保持不变R0为定值电阻．当�动变阻器的�片移动时�动变阻器的电功率P1随其接入电路的阻值R1的变化图象如 sketch template

题目如甲图所示的电路中电源电压为8V恒定不变R0为定值电阻R为�动变阻器闭合开关S后在�片P�动过程中电压表与电流表示数的变化 sketch template

百度教育 sketch template

题目图甲是某型号电子秤其原理结构如图乙所示．R0为定值电阻R是压敏电阻其阻值随所受压力F变化的关系如图丙所示改写电压表的表盘数值后 sketch template

题目如图所示电路电源电压为6 V当S断开时电流表的示数为1 AS闭合时电流表的读数为15安求1电阻R1的阻值2 sketch template

如图所示的电路中电源电压不变R1为定值电阻开关S闭合后�动变阻器�片�左移动时电流表的示数 电压表示数与电流表示数之比．两空均 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

题目如图所示是电阻甲和乙的I﹣U图象下列说法正确的是A 电阻乙为定值电阻B 当电阻甲两端电压为2 V时R甲=04ΩC 只将电阻 sketch template

题目如图1所示是电阻甲和乙的I﹣U图象下列说法不正确的是 A．电阻甲为定值电阻B．当电阻甲两端电压为1V时R甲=5ΩC．如图2所示 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

题目如图所示的电路中电源电压为 6V且保持不变�动变阻器 R 的规格为“40Ω 1A 定值电阻 R1的规格为“10Ω 05A 只 sketch template

题目用如下图甲所示的电路“探究电流与电阻的关系电源电压恒为6V定值电阻R备有5Ω10Ω20Ω40Ω各一个1闭合开关前 sketch template

如图所示电路电源两端电压恒定定值电阻R1＝15W忽略灯丝电阻值RL随温度的变化只断开开关S3时电流表的示数为I只闭合开关S2时电压 sketch template

小敏用如图甲所示的电路图研究通过导体的电流与导体电阻的关系电源电压恒为6V改变电阻R的阻值调节�动变阻器�片保持R两端的电压不变记 sketch template

如图所示R1和R2的规格分别为“4W100Ω 和“1W100Ω 的电阻当AB端加电源通电时这部分电路允许消耗的最大功率为 A2W sketch template

题目实验小组的同学们利用如图所示的装置进行电学实验的复习实验中使用的小灯泡上标有“22V 字样实验过程中的有关证据记录如表实验次数 sketch template

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