如图所示,把一个平行板电容器与一个静电计相连接后,给电容器带

如图所示,把一个平行板电容器与一个静电计相连接后,给电容器带上一定电量,静电计指针的偏转指示出电容器两板间的电势差,现保持极板A不动,而要使静电计指针的偏角增大,可采取的办法是(    )

A.B板向右移一些

B.B板向左移一些

C.B板向上移一些

D.在AB之间插入一片有机玻璃板

 

答案

BC

解析:

 

相关题目

已知直线经过点,则的取范围是                   
已知直线经过点,则的取范围是                     
函数的图像如图所示,的导函数,则下列数值排序正确的是
函数的图像如图所示,的导函数,则下列数值排序正确的是(     )        A.              B.        C.              D.  
Have you ever seen __________ man?   A. such a tall           B. suc
Have you ever seen __________ man?   A. such a tall           B. such tall a                C. so a tall                   D. a so tall
用游标为50分度的卡尺(测量值可精确到0.02 mm)测定某圆筒
用游标为50分度的卡尺(测量值可精确到0.02 mm)测定某圆筒的内径时,卡尺上的示数如图1-8-2所示,可读出圆筒的内径为__________mm.               
We can't _____ one to change the habits of a lifetime in a short time. A. hope
We can't _____ one to change the habits of a lifetime in a short time. A. hope                 B. wait            C. expect             D. imagine
(理)若复数z满足对应关系f(1-z)=2z-i,则(1+i)·f(1-i)等于A.1+i    
(理)若复数z满足对应关系f(1-z)=2z-i,则(1+i)·f(1-i)等于A.1+i             B.-1+i                C.2               D.0
单项选择。 I _______ join in the ping-pong game next Friday. A. am going 
单项选择。 I _______ join in the ping-pong game next Friday. A. am going   B. am going to  C. would  D. going to
Camping wild is a wonderful way to experience the natural world and , at its bes
Camping wild is a wonderful way to experience the natural world and , at its best, it makes little environmental influence .But with increasing numbers of people wanting to escape into the wilderness,

最新题目