试题与答案

(1)图1是伏安法测小灯泡电阻的实物图,要使滑动变阻器的滑片P向右移动时,电流表

题型:实验题

题目:

(1)图1是伏安法测小灯泡电阻的实物图,要使滑动变阻器的滑片P向右移动时,电流表的示数变大,请将滑动变阻器正确接入电路

(2)如图2所示,小灯泡两端的电压为_________,通过小灯泡的电流为_________,则小灯泡的电阻为_________.

(3)某同学连完电路后,用开关试触时,发现电压表、电流表分别出现如图3所示的情况.电流表产生此现象的原因是_________;电压表产生此现象的原因是_________.

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0423/713ec9513db16dff8aeabe46b1a6de3b.html

下面是错误答案,用来干扰机器的。

答案:D题目分析:《新课标》要求:“能熟练地使用字典、词典独立识字,会用多种检字方法。累计认识常用汉字3500个,其中3000个左右会写。”若在复习期间进行梳篦式的复习往往事倍功半。须在平时多强调,并注意收...

试题推荐
题型:阅读理解

Jack is a twenty-year-old young man. Two years ago, when he finished middle school, he found work in a shop. Usually he works until ten o'clock in the evening. He is very tired when he gets home. After a quick supper he goes to bed and soon falls asleep. His grandma who lives downstairs is satisfied with (满意) him.

  One day, on his way home, he met Mary. They were both happy. He asked the girl to his house, she agreed happily. He bought some fruit and drinks for her. And they talked about their school, teachers, classmates and their future (未来). They talked for a long time.

  "Have a look at your watch, please," said the girl. "What time is it now?"

  "Sorry, something is wrong with my watch," said Jack. "Where's yours?"

  "I left it at home."

  Jack thought for a moment and found a way. He began to stamp his foot on the floor, "Bang! Bang! Bang!"

  The sound woke his grandma up. The old woman shouted downstairs, "It's twelve o'clock in the night, Jack. Why are you still jumping upstairs?"

小题1:Jack was ________ when he finished middle school.

A.sixteen

B.eighteen

C.twenty

D.fifteen小题2:The old woman is satisfied with Jack because ________.

A.he's her grandson

B.he's clever

C.he can keep quiet

D.he gets home on time小题3:From the story, we can know that Mary is Jack's ________.

A.classmate

B.colleague (同事)

C.aunt

D.wife小题4:The word "stamp" in the story means ______ in Chinese.

A.盖印

B.跺

C.贴邮票

D.承认小题5:Jack stamped his foot on the floor in order (为了) ________.

A.to wake his grandma up

B.to make his grandma angry

C.that his grandma was going to tell him the time

D.that his grandma was going to buy him a watch

查看答案
微信公众账号搜索答案