
A.
B.
C.
D.
[单选题]A.电流i(t)从0开始逐渐增长,再逐渐衰减为0B.电压u从3V逐渐衰减到2VC.电压甜从2V逐渐增长到3VD.时间常数τ=4C
[单选题]A.增大B.减小C.不变D.条件不足,无法确定
[单选题]A.增大B.减小C.不变D.条件不足,无法确定
[单选题]A.电流i(t)从0开始逐渐增长,再逐渐衰减为0B.电压u从3V逐渐衰减到2VC.电压甜从2V逐渐增长到3VD.时间常数τ=4C
[单选题]A.100B.50C.10D.0
[单选题]A.1B.2C.3D.4
[单选题]A.AFB.HAC.CED.FD