7．如图4所示开关闭合后灯泡�光电压表和电流表分别测出了灯泡两端的电压和通过的电流并且两表的示数分别不超过3v和06a 1根据 Sketch Coloring Page

7．如图4所示开关闭合后灯泡�光电压表和电流表分别测出了灯泡两端的电压和通过的电流并且两表的示数分别不超过3v和06a 1根据 Template

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tomski7．如图4所示开关闭合后灯泡�光电压表和电流表分别测出了灯泡两端的电压和通过的电流并且两表的示数分别不超过3v和06a 1根据 coloring

7．如图4所示开关闭合后灯泡�光电压表和电流表分别测出了灯泡两端的电压和通过的电流并且两表的示数分别不超过3V和06A 1根据 sketch template

题目如右图所示家庭电路中当开关S闭合后灯泡L不亮用试电笔测试cd两点时氖管都�光测试ab两点时只有a点氖管�光则故障可能 sketch template

如图所示的电路闭合开关S1和S2后下列分析正确的是 A．小灯泡亮电铃响 B．小灯泡亮电铃不响 C．小灯泡不亮电铃响 D．小灯泡不亮 sketch template

在图4所示的电路中电源两端的电压为6V并保持不变R1R2为两个相同阻值的电阻开关S1闭合后下列说法中正确的是 sketch template

小明用如图1所示的电路图测小灯泡电阻．已知电源电压3V待测小灯泡额定电压为25V猜想电压表示数电流表示数灯泡断路灯泡短路1当开关 sketch template

如图所示的电路中123456为连接点的标号．在开关闭合后�现小灯泡不亮．现用多用电表检查电路故障需要检测的有电源开关小 sketch template

当闭合开关试触时�现电流表指针的偏转如图a所示为了提高准确度接下来的操作是断开开关将电流表的量程改用．正确测出电路中的电流如图 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

4．如图1所示在开关和小灯泡之间连着两个�属夹A和B在�属夹之间分别接入硬币铅笔芯橡皮和�料尺闭合开关后小灯泡能�光的是 A sketch template

如图所示的电路中电源两端电压不变灯泡的电阻不随温度变化闭合开关S后�动变阻器的�片P由图示位置�a端�动的过程中下列说法正确的是A sketch template

如图所示的电路中，电源电压保持不变。闭合开关S后，�片P从b端移动到a端的过程，电压表示数U与电流表示数I的关系图像如图所示。下列说法正确的是（ sketch template

一轮复习：描绘小灯泡伏安特性曲线知乎 sketch template

如图9所示在弹簧测力计的挂钩下悬挂一个小水桶桶与水的总质量为5kg用细线系一个质量为178 Kg的铜球用手提细线上端将小球缓慢浸没在 sketch template

如图7 所示电源电压恒定小灯泡L标有“3V 06W 字样R为定值电阻闭合S断开S1小灯泡正常�光若再闭合S1�现电流表示数 sketch template

如图所示开关s闭合后三个灯泡属于并联的电路是 A．B．C．D．——青夏教育精英家教�—— sketch template

如图4所示开关S闭合后�片P由a端�b端�动时R1的阻值将 电流表的示数将 电压表的示数将填“变大 “变小或“不变 ——青夏 sketch template

题目如图所示为小排量汽车在lh的时间内在水平路面上匀速行驶了72 Km消耗汽油6 Kg若已知该汽车�动机的功率为23 KW汽车 sketch template

在如图4所示电路中闭合开关将�动变阻器的�片P从a �到b 的过程中 A．电路中总电阻逐渐变大 B．电流表的示数先变大后变小 C．R 两端 sketch template

如图所示电路开关S1闭合后S2的断开与闭合使电流表A2的两次示数之比为35由此可知R1与R2的阻值之比为23S2断开再闭合的过程 sketch template

10．某同学连接的电路如图7所示设电源电压不变当闭合开关将�动变阻器的�片�下�动时下面的说法中正确的是A．电压表示数变大电流表示数 sketch template

11．如图7所示当开关S闭合后电压表V2示数为10V电压表V1示数为8V若电源电压为15V则灯气两端电压为 A 2V B sketch template

如图4所示当开关S闭合时灯L1L2均不亮某同学用一根导线探究其故障当把导线并接在灯L1两端时�现灯L2亮灯L1不亮当把导线并接在 sketch template

如图所示的电路中若要使灯L1和L2组成并联电路应闭合开关 应断开开关 A．S2S3S1B．S1S3S2C．S1S2S3——青 sketch template

如图9所示电源两端的电压为12V且保持不变电阻R1与 R2 的比值是4﹕1当开关S1闭合S2断开时10s内电流通过R1产生的热量是 sketch template

如图所示三个灯泡是相同的当开关闭合时电流表A3的示数为02A则电流表A1A2的示数分别为0606A和0404 A三个灯泡 sketch template

如图所示当开关S闭合时�现只有一灯�光且电压表示数为45V产生这一现象的原因可能是 A灯L1断路 B灯L1短路 C灯L2 sketch template

如图所示的电路中闭合开关时�现灯泡L1L2均不亮电流表指针几乎没有偏转．某同学用一根导线去找电路故障他将开关闭合然后将导线并接在 sketch template

如右图所示电路中电源电压保持不变闭合开关S后将�动变阻器R2的�片P�右移动在此过程中 A．电压表V1示数不变电压表V2示数变大B sketch template

5．在如图4所示的电路中当闭合开关S 后若将�动变阻器的�片P�下调节则 A．电压表和电流表的示数都增大 B．灯L2变暗电流 sketch template

如图所示电路闭合开关时灯不亮已经确定是灯泡断路或短路引起的在不能拆开电路的情况下现用一个多用电表的直流电压档直流电流档和欧姆档分别对 sketch template

百度教育 sketch template

在如图所示的电路中闭合开关后可以使小灯泡正常�光的是C属于短路的是BD属于开路的是A．题目和参考答案——青夏教育精英家教�—— sketch template

13．如图4所示电源电压和灯泡电阻都保持不变当�动变阻器的�片P由中点�右移动时下列判断不正确的是 A．电流表和电压表的示数都增大 B sketch template

题目如图所示的电路电源电压恒为6VL1标有“6V 72W 的字样L2标有“6V 36W 的字样忽略温度对灯丝电阻的影响下列 sketch template

如图所示电路中只闭合开关S灯泡L恰能正常�光若再闭合S1则电流表的示数变大灯泡亮度不变．题目和参考答案——青夏教育精英家教�—— sketch template

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