Work
done in this step (d W), resulting in charge Q¢ on
conductor 1 increasing to Q¢+ d Q¢, is given by
Q
W
V
Q
Q
C
δ
δ
′δ
=
=
′
′
′
(2 68)
Integrating eq (2 68)
W
Q
C
Q
C
Q
Q
C
Q
Q
=
′
=
′
=
∫
0
2
0
2
1
2
2
δ
’
We can write the final result, in different ways
2
2
1
1
2
2
2
Q
W
CV
QV
C
=
=
=
(2