问题
选择题
已知满偏电流为2mA、内阻为500Ω的电流表,给它串联一个14.5kΩ的电阻后,作为电压表使用,该电压表的量程为
A.10V B.29V C.30V D.100V
答案
答案:C
当通入满偏电流时,串联部分承担电压即为量程,C对。
已知满偏电流为2mA、内阻为500Ω的电流表,给它串联一个14.5kΩ的电阻后,作为电压表使用,该电压表的量程为
A.10V B.29V C.30V D.100V
答案:C
当通入满偏电流时,串联部分承担电压即为量程,C对。
选择方框内的单词完成句
小题2:Peter _____much time playing computer games and did badly in all subjects last term. 小题3:Ted is an active ________ of the chess club. 小题4:That boy is very young, but he is very_______ . 小题5:You will be late_______ you get up right away. 小题6:If he _______here, he would help me to solve the problem. |