题目内容
在公式
=
+
中,求出R1=______.
| 1 |
| R |
| 1 |
| R1 |
| 1 |
| R2 |
因为
=
+
,所以
=
-
=
,则:R1=
.
| 1 |
| R |
| 1 |
| R1 |
| 1 |
| R2 |
| 1 |
| R1 |
| 1 |
| R |
| 1 |
| R2 |
| R2-R |
| R•R2 |
| R•R2 |
| R2-R |
练习册系列答案
相关题目
在公式
=
+
中,(r1+r2≠0),用r1、r2表示R是( )
| 1 |
| R |
| 1 |
| r1 |
| 1 |
| r2 |
| A、R=r1+r2 | ||||
| B、R=r1r2 | ||||
C、
| ||||
D、R=
|