题目内容
(请给出正确答案)
[单选题]
R1与R2并联,再与R3串联,则整体的电阻为()
A.R1+R2+R3
B.R1+(R2*R3)/(R2+R3)
C.(R1*R2)/(R1+R2)+R3
D.(R1*R3)/(R1+R3)+R2
答案
A、R1+R2+R3
如果结果不匹配,请 联系老师 获取答案
A.R1+R2+R3
B.R1+(R2*R3)/(R2+R3)
C.(R1*R2)/(R1+R2)+R3
D.(R1*R3)/(R1+R3)+R2
A、R1+R2+R3
A.U1 = U2
B.U1 < U2
C.U1 > U2
D.无法比较