▪
▪
▪
✓ (R)
✓ (E';r')
✓ (E;r)
▪
▪
30minU = 2,5V
= 150mA I
1
2
3 40%
3.1
3.2
210VI = 140A
720 tr/min 87%
1
2
3
4
5 60%
5.1
5.2
60V
I = 12A𝜌 = 80%
1
2
3
(E' = 4V;r' = 8)(E =6V; r =2)
1
2
3
4
5
❖
❖
❖
❖
❖
❖
(E = 54V ; r = 1)(E' ; r')
R = 5
1
min524kJ r’
2 1,5kJ
❖ E'
❖
❖
❖
Transfert d’énergie dans un circuit électrique