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某兴趣小组用二节新干电池，规格为“10Ω 1.5A”的滑动变阻器等器材，来测导体电阻．请分析回答： （1）连接好电路，闭合开关，向右移动滑动变阻器滑片，当滑片移到C点时，发现两表才有示数，示数分...
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某阻值为10欧的定值电阻连在一节新干电池两端则它两端的电压为伏通过它的电流是安若把它连在3伏的电源两
一节新干电池的电压是
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220V
一个小灯泡接在一节新干电池两端时通过小灯泡的电流是0.15A当接在两节串联新干电池两端时通过小灯泡
日常生活中一些小的用电器都以干电池作为电源一节新干电池的电压为1伏为获得不同的电压值可采用将若干节干
一台录音机要求电源电压是9伏如果用新干电池作电源则需要将A．6节新干电池并联 B．6节新干电池串联
如图所示是用一根导线徒手连接的两个小灯泡电路所用的干电池是2节新干电池灯泡的规格2.5V0.2A亮起
某学校数学兴趣小组有10名学生其中有4名女学生英语兴趣小组有5名学生其中有3名女学生现采用分层抽样方
某兴趣小组在进行测定小灯泡额定功率实验时可用的实验器材有标有0.2A字样的小灯泡3节新干电池标有1
某兴趣小组在进行测定小灯泡额定功率实验时可用的实验器材有标有0.2安字样的小灯泡3节新干电池标有1
以下说法中你认为最符合实际的事
一节新干电池的电压是1.5V
人体的正常体温为35℃
家用冰箱正常工作的电流是15A
我国家庭电路正常电压是380V
流过某手电筒使用两节新干电池小灯泡的电流大约是0.25A等于mA取下小灯泡和一节新干电池连成电路开关
一节新干电池两极间的电压大约是V.一款移动电话的待机电流为15mA＝A.
某电学兴趣小组在探究电阻上的电流跟两端电压的关系时设计了如图所示的电路选用两节干电池供电定值电阻R=
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6节新干电池并联
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一节新干电池的电压是
1.5V
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一节新干电池的电压为V.
某兴趣小组探究用不同方法测定干电池的电动势和内阻他们提出的实验方案中有如下四种器材组合为使实验结果尽
一个安培表、一个伏特表和一个滑动变阻器
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某阻值为10欧的定值电阻连在一节新干电池两端则它两端的电压为7伏通过它的电流是8安若把它连在3伏的电
如图所示是用一根导线徒手连接的两个小灯泡电路所用的干电池是2节新干电池灯泡的规格2.5V0.2A亮
一节新干电池电压为____________V;我国家庭电路电压____________V.
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