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

3．在图1所示的电路中当开关闭合后在�属夹AB之间分别接入硬币铅笔芯橡皮和�料尺小灯泡都能�光的是 A．接入硬币和�料尺 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

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

题目如图甲所示是为测出额定电压为25V的小灯泡的额定功率的实验电路图1按图连接好电路开关S闭合之前�动变阻器的�片P应置于端 sketch template

一轮复习：描绘小灯泡伏安特性曲线知乎 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

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

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

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1甲所示的电路闭合开关后两灯都能�光并且两块电压表的指针所指的位置如图1乙所示则L1两端的电压是 VL2两端的电压是 V 图1 sketch template

如图所示电源电压保持不变闭合开关后将�动变阻器R2的�片P�右移动的过程中下列说法正确的是 A．电流表A的示数变小电压表V2的示 sketch template

如图所示电路开关S闭合后四个灯泡都正常�光某时刻t因灯丝烧断而突然熄灭假设其它三灯丝都没烧断则 AL2变暗L3更亮L1不变 sketch template

题目如图所示的电路中电源电压恒为3V灯泡L1标有“3V 3W L2标有“6V 的字样电流表的量程为0 06A电压表的量程 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

3．在图1所示的电路中当开关闭合后在�属夹AB之间分别接入硬币铅笔芯橡皮和�料尺小灯泡都能�光的是 A．接入硬币和�料尺 sketch template

如图7所示当开关闭合后�现小灯泡不亮电流表无示数用电压表测量�现Uab=0Ubc=6VUdc=0若电路中只有一处故障则其故障 sketch template

如图1a的电路中电源由4节新干电磁串联而成开关闭合后电压表V2的示数如图b 所示则灯两端电压分别是 和 ——青夏教育精英家教�—— 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

题目如图所示电源电压可调小灯泡上标有“6V05A 的字样小灯泡正常�光时电压为6V电流为05A不考�温度对小灯泡电阻的影响 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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

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

题目如图所示电源电压不变开关S闭合后电压表V1的示数为4V电压表V2的示数为6V电流表A的示数为1A若将R2与R3互换位置后 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1所示是小明探究小灯泡电阻所用的器材已知小灯泡的额定电压为38V．1请你用笔画线代替导线将实物图连接完整．要求使�动变阻器的� 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

如图所示闭合开关S后A1的示数为12AA2的示数为08AA3的示数为10A则通过灯泡L1的电流为0202A通过灯泡L2的 sketch template

如图8所示的电路电源电压保持不变闭合开关S调节华东变阻器两电压表的示数随电路中电流变化的图线如图9所示根据图线的信息可知是电压 sketch template

如图所示的电路中闭合开关S后比较abcd四处电流大小其中不正确的是 A．Ia＞IbB．Ia=IdC．Ia＞IdD．Id＞Ic 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

19．如图所示当开关S闭合时电压表V的示数为45VV1的示数为25V则R1R2的阻值之比为 A．59 B．95 C．4 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

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